The ambulance idled, its diesel growl a low counterpoint to the distant city hum. Iain leaned across Jez, nudging the horn. Two short blasts. A moment later, the double doors of Holby City ED slid open and Cal Knight emerged, looking faintly bewildered, a standard-issue ambulance uniform somehow sitting awkwardly on his shoulders. He carried a small rucksack, clutched tight. “Took your time, Knight,” Jez called out, a grin already splitting his face. “Thought you’d be keen to escape the hallowed halls of A&E.” Cal squinted against the weak morning light. He jogged over, tossing his bag into the back before clambering into the front passenger seat. “Just making sure the place didn’t implode without me.” He pulled the door shut with a solid thunk. Iain put the vehicle into gear, the ambulance lurching slightly. “Relax, Cal. It’ll survive. You, on the other hand, might not survive a shift with us.” He glanced over, a wry smile playing on his lips. “Rules, Knight. This isn’t the ED. You don’t touch things without asking. Especially not the radio.” Cal’s gaze was already drifting around the cab, assessing the dashboard, the overhead console. “Just observing. Familiarising myself with the environment.” He paused, a flicker of genuine curiosity in his eyes. “You know, I’ve always wondered how many of these buttons are strictly necessary.” “All of them, mate,” Jez said from the back, already pulling out a packet of biscuits. “Unlike a consultant, we don’t have a junior doctor to press them for us.” Cal rolled his eyes, but a small smile touched his lips. He leaned back in the seat, the unfamiliar firmness of it a stark contrast to the worn leather of the staff room sofa. The ambulance smell, a mix of antiseptic, old coffee, and something vaguely metallic, was already seeping into his clothes. It was different. A good different, he decided. His hand, almost without conscious thought, hovered over the radio console. The volume knob, specifically. It was set a touch low. He wanted to hear the chatter, the dispatches, the pulse of the outside world. Iain’s earlier warning echoed, but the temptation was strong. His fingers twitched. Iain caught the movement in his peripheral vision. “Knight. Don’t. Even.” His voice was calm, but the underlying warning was clear. “Seriously. It’s set where it needs to be. We’re waiting on dispatch.” Cal retracted his hand, a frustrated sigh escaping him. “Fine. Just seemed a little quiet.” He slumped a little, crossing his arms. The silence stretched, broken only by the hum of the engine and the occasional rustle of Jez’s biscuit packet. Then, a crackle. A voice, clipped and efficient, cut through the quiet. “Ambulance 442 to a 78-year-old female, collapsed at home. Believed to be a fall. Address: 14 Willow Lane, Holby.” Iain acknowledged the call, a flicker of professionalism replacing his earlier amusement. “Right then, boys. Let’s see if you remember how to actually *do* medicine, Cal.” --- Number 14 Willow Lane was a neat terraced house, a climbing rosebush heavy with crimson blooms framing the front door. The patient, an elderly woman named Margaret, lay awkwardly on her sitting room rug, a porcelain figurine shattered beside her outstretched hand. Her left wrist was already swelling, a tell-tale angle suggesting a distal radius fracture. “Margaret, can you tell us what happened?” Cal knelt beside her, his voice gentle, his eyes quickly scanning her for other injuries. The smell of lavender and dust hung in the air. She winced, her breath coming in shallow gasps. “Just… just reached for the remote. My foot caught.” Her eyes, a watery blue, darted to the broken figurine, a small sigh escaping her lips. “My favourite. From my sister.” Iain was already taking observations, his movements efficient. Jez was gathering equipment, the blue light of the pulse oximeter flickering on Margaret’s finger. Her oxygen saturation looked good, blood pressure stable, heart rate a little elevated, but nothing alarming. “Okay, Margaret,” Cal said, his fingers carefully assessing her wrist, eliciting another sharp intake of breath. “Looks like you’ve broken your wrist. We’ll get that splinted and then get you to the hospital.” He paused, his brow furrowing slightly. “Have you been feeling generally unwell recently, Margaret?” She hesitated. “Just a bit… tired. And thirsty. Always thirsty. But I don’t like drinking too much, you see. Makes me have to get up in the night.” Cal exchanged a glance with Iain. “Did you have a full glass of water this morning?” “No, dear. Just my tea.” She looked confused, then added, “It's been a hot few days, hasn’t it?” “It has,” Cal agreed, his hand resting lightly on her forehead. It felt warm, but not feverish. “Iain, her skin turgor’s a little off, and her mucous membranes are dry. I think she’s significantly dehydrated. The fall might have been more than just a trip; could be orthostatic, or simply lightheadedness from fluid depletion.” Iain re-checked her blood pressure, this time having her sit up slightly. It dropped a little too much for comfort. “Good spot, Cal. Could have just discharged her with a fracture clinic appointment otherwise.” He turned to Jez. “Jez, can you get a litre of Hartmann’s running? Slow drip for now, we’ll see how she tolerates it.” Jez, already preparing the IV kit, whistled softly. “Consultant diagnosis on the scene. Who’d have thought it?” His tone was light, but there was a hint of genuine respect. Cal felt a small, familiar warmth spread through him. This was different from the ED. Here, his observations had immediate, tangible impact. It was more raw, more direct. Less noise, more focus. --- The next few hours passed in a blur of blue lights and minor emergencies. A minor RTA on the dual carriageway, whiplash and shaken nerves, nothing more. A child with a febrile seizure, quickly managed with antipyretics and a cool flannel, the terrified parents reassured by Cal’s calm, authoritative presence. He even showed Jez a slightly more effective way to secure a child’s car seat for transport, a trick he’d picked up from an obscure paediatric journal. Jez, despite his initial protests about “consultant-splaining,” admitted it was a better method. “Alright, alright. I’ll give you that one, Knight. But you’re still not touching the radio.” Cal just grinned, the corners of his eyes crinkling. He was enjoying this, truly enjoying it. The fresh air, the constant change of scenery, the immediacy of the job. In the ED, patients arrived, were triaged, stabilised, and then often disappeared into the labyrinthine corridors of the hospital. Here, they were the first, and often the only, point of contact for a crucial period. He saw the full arc, from initial distress to stabilisation and transport. It felt complete. “So, what’s the worst call you’ve ever had?” Cal asked, breaking the comfortable silence between calls, the ambulance cruising along a tree-lined avenue. Iain sighed, a long, drawn-out sound. “Hard to pick just one. They all have their own kind of bad. But the ones that stick are usually the ones where you can’t do much. The ones that just… overwhelm you.” He gripped the steering wheel tighter. “You’ll see.” Jez, usually quick with a joke, was quiet for a moment. “I remember a particularly nasty one, an industrial accident. Always the worst. So much wreckage, so much chaos. Just… never felt like we had enough hands.” Cal nodded, absorbing their words. He knew the feeling, that helplessness. But out here, it felt somehow more exposed, more direct. There were no consultants to call, no specialists to hand off to. Just the three of them, and whatever they could carry in the back of the Merc Sprinter. The radio crackled again, pulling them sharply from their reflective mood. The dispatcher’s voice was urgent, the usual measured tone replaced by a hurried clip. “Ambulance 442, urgent. Industrial accident. Abandoned factory complex, off the old quarry road. Structural collapse reported. Multiple casualties unconfirmed, at least one trapped. Fire and police en route. Standby for further details.” Iain’s expression hardened immediately. He hit the siren, the wail cutting through the afternoon air. “This is it, boys,” he said, his voice low, focused. “This is what we train for. Stay sharp.” --- The abandoned factory complex was a skeletal ruin, a monument to forgotten industry. Twisted metal girders reached for the sky like skeletal fingers, broken windows gaped like empty eyes. Dust, thick and grey, billowed from a section of collapsed roof, carried on the breeze. The air was heavy with the smell of damp concrete, rust, and something acrid – possibly old chemicals. Police cars, blue lights flashing, had already cordoned off the area. A lone fire engine was pulling up as Iain expertly navigated the ambulance through the chaos, parking alongside. Cal unclipped his seatbelt, his heart beginning to pound a steady rhythm against his ribs. This was different. No neat living rooms, no calm reassurance. “Briefing,” Iain barked, already grabbing his grab bag. “Fire are assessing stability. We’re to stay clear until they give the all-clear for entry. Patient is believed to be in the main assembly hall, under a section of collapsed roof. One male, mid-thirties, security guard.” They met the fire incident commander, a burly man with soot smudges on his helmet. “Looks like a secondary collapse, lads,” he said, pointing to a fresh pile of debris. “The initial one happened last night. This one just went. One of our guys heard a shout. We’ve located him, he’s conscious, but trapped. Leg injury, maybe chest. We’re shoring up as fast as we can, but it’s… tricky. Lots of unsupported weight.” Cal pushed past Iain, peering through a gap in a partially collapsed wall. He saw him, a man pinned beneath a concrete slab and a tangle of rebar, his face pale and contorted in pain. His leg was trapped, but Cal’s eyes went immediately to the man’s chest. His breathing was shallow, his shirt stained dark. More concerning, however, was the way a section of corrugated iron, precariously balanced, was slowly but perceptibly shifting, its sharp edge directly above the man’s neck. A small, almost imperceptible tremor ran through the ground. “Iain, we can’t wait for them to shore it completely,” Cal stated, his voice devoid of his earlier bickering tone, replaced by an urgent authority. “That corrugated sheet is moving. If it drops even a foot, he’ll be decapitated. Or at best, severe neck trauma. His airway will be compromised within seconds. We need to get to him now. We can stabilise the sheet, just for long enough.” Iain followed his gaze, his face grim. He saw it too. The precarious balance, the imminent danger. The fire commander was still explaining the dangers of entry. Cal, however, was already moving, grabbing a cervical collar and a trauma bag. “Jez, grab the extrication kit, the small one, and some blankets. Iain, we need to get in there and get that sheet off him before it drops.” He didn't wait for a response, pushing through the cordon, his eyes locked on the trapped man. The ground shifted again, a low groan emanating from the structure above him, and the corrugated iron sheet dropped another inch with a sickening metallic shriek.

Chapter 1: Shift Change