Chapter 23: Frost's Familiar — Krieger
The hospital's blood-sigil architecture resolved through my Transparent World at thirty meters.
I'd positioned on a rooftop across the street — standard observation distance, clear sightline to the emergency department entrance, two diagnostic arrays I'd deployed on the building's exterior during my early network expansion still returning active data. The placement had been opportunistic months ago. Now it was operational.
Three signatures inside the building demanded attention.
Karen's blood-sigil was stable, unchanged from the baseline I'd established at the hematology conference. She was in the treatment area, probably running the same diagnostic protocols she'd been perfecting since the retroviral samples first crossed her path.
The second signature was familiar from my Blood Memory index. Curtis Webb — the blood rave survivor I'd watched get bitten while monitoring the event from the warehouse rooftop. His blood-sigil showed vampire retrovirus at approximately 40% integration and accelerating. Early-stage turning. Not a threat yet, but the window was closing.
The third signature made my jaw tighten.
Krieger. NYPD detective. Frost's Familiar. His covenant marks were blazing with active service — the specific pattern of a Familiar executing direct orders from their master. He was here on Frost's instruction, and the armament data from my network surveillance told me why.
[Blood-Sigil Profile: Detective Krieger. Status: ACTIVE FAMILIAR PROTOCOL]
[Armament (4 hours prior): EDTA rounds loaded at precinct armory.]
I keyed the secure line.
"Krieger is inside. He is on active Familiar protocol — Frost ordered him there. The patient is Curtis Webb. He's in early-stage turning, not a threat yet."
Blade's voice came back immediate. "I'm going in."
"Krieger has EDTA rounds. He loaded them at precinct armory four hours ago."
No response. Blade was already moving.
I held active Transparent World and read the engagement through blood-sigil stress signatures.
The sequence unfolded in biological data: Blade's signature entering the building, moving through the treatment area with the specific efficiency of someone who knew exactly where he was going. Curtis Webb's signature spiking — combat activation, the turning process accelerating under stress. Krieger's signature shifting from surveillance mode to engagement.
Then Blade's blood-sigil spiked with a pattern I'd never read before.
[Blood-Sigil Alert: Blade. Biological Stress Response: CRITICAL]
EDTA contact. The anticoagulant compound was designed specifically to disrupt dhampir physiology — Frost had engineered Krieger's loadout for exactly this encounter. Blade was still functional, still fighting, but his covenant architecture was showing the specific disruption patterns of chemical interference.
Karen's signature spiked next.
Not combat activation — she wasn't fighting. But her blood chemistry showed the same EDTA stress markers that were disrupting Blade's system. Collateral exposure. The rounds had released their payload in an enclosed space and she'd been caught in the dispersal.
I transmitted: "Karen has been hit with EDTA. She needs the antidote protocol."
"Working on it." Blade's voice was strained. He was managing his own EDTA exposure while trying to extract.
I pulled the EDTA response formula from my medical database — CDC-standard anticoagulant reversal protocol, adapted for the specific compound profile I'd identified in Krieger's loadout. The treatment required vitamin K administration, blood product support, and monitoring for delayed coagulation failure.
I transmitted the formula through the secure line. I couldn't confirm if Blade received it in time.
The engagement concluded sixty-seven seconds after Karen's exposure spike.
Curtis Webb's blood-sigil terminated — violent physical destruction, the specific pattern of a turning vampire being neutralized before full conversion. Krieger's signature showed injury response but remained active; he'd survived the encounter. Blade and Karen's signatures were both moving toward the building's emergency exit.
I tracked them through my passive network as they cleared the hospital perimeter.
At twelve meters, I got a clear read on Karen's blood-sigil for the first time since the EDTA exposure. Her physiology was stressed but stabilizing — the partial exposure had been manageable, and the reversal protocol appeared to be taking effect. Blade must have administered the treatment.
[Blood-Sigil Analysis: Karen Jenson. EDTA stress markers present. Coagulation status: RECOVERING]
I also read something unexpected.
The EDTA contact had left a biological stress marker in her chemistry that my Tier 2 analysis flagged for review. The compound's chemical composition showed structural similarities to hemotoxin-level bioactive materials — not my hemotoxin specifically, but similar enough that my analysis protocols had noted the correlation.
"Research note. The EDTA compound has biochemical overlap with third-state blood chemistry. Worth investigating."
I filed the observation and continued tracking.
Karen's blood-sigil as she moved away from the hospital showed the specific pattern of someone processing fear into problem-solving rather than freezing. The same composure I'd observed in her research work at the conference. The same methodological stability that made her questions difficult to deflect.
Blade's signature was managing the EDTA disruption with dhampir resilience. He'd be functional within hours.
The secure line crackled.
"Karen is stable. Webb is down. Krieger escaped."
"Copy. Temple timeline?"
"Twelve hours. Maybe less."
The line went quiet.
Karen didn't know that the formula for managing EDTA exposure — the one Blade had relayed to her during the extraction — had come from someone on the secure line who had read her blood chemistry from thirty meters through a wall.
I kept that information filed under operational security and resumed my position.
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