TENNA. The burning in my lungs had progressed past uncomfortable and straight into actual agony. I’d been holding my breath underwater for forty-five seconds and every survival instinct in my body was screaming at me to surface right now. Elliot had given me explicit instructions to stay under for a full sixty seconds and I’d rather pass out than disappoint him. I kept counting each second inside my head while staring upward through the constantly shifting surface of the pool. The water distorted Elliot’s face into wavering fragments but I could still make out that laser-focused intensity he always carried during our training sessions. The fifty-second mark passed. Someone had apparently strapped a cement block across my chest. Black spots were creeping inward from the edges of my visi

