spoiler alert

First Alert CO605 Plug-in Carbon Monoxide Detector with Battery Backup: 9-Volt Alkaline, No Hardwired Installation Needed

First Alert CO400 Battery Powered Carbon Monoxide Detector: 9-Volt CO Alarm, Silences Unwanted Alarms, 7-Year Warranty

First Alert CO710 Carbon Monoxide Detector with Digital Temperature Display: 10-Year Warranty, Lithium Battery, White

First Alert Alarm Smoke AC/DC with ADP SMI100-AC: Hardwired Smoke Detector, Fire Alarm, Lithium Battery, 10-Year Warranty

First Alert 2pk CO400CN2 Battery Powered Carbon Monoxide Detector: Best CO Detector, 9-Volt Alkaline Battery Included

First Alert Alarm Combo AC/DC with ADP SMICO100-AC: Smoke & Carbon Monoxide Detector, Latching Alarm Indicator, Hardwired

First Alert Alarm Combo DC Slim SMCO210 Clam Tray: Smoke & Carbon Monoxide Detector, Fire Alarm, Lithium Battery, White

First Alert Alarm Combo DC10 with VCE SMCO210V Clam Tray: Smoke & Carbon Monoxide Detector, Fire Alarm, 10-Year Warranty

First Alert 9120B-AC BRK, Hardwire Interconnect Smoke Alarm with Battery Backup

First Alert Alarm Smoke DC10 with VCE SM210V Clam Tray: 10 Year Lithium Ion Battery, No Hardwired Installation Required

For Whom The Ball Rolls - By Dav Pilkey ( Hardcover )

First Alert Precision Detection Interconnect Hardwired Smoke Alarm with 10-Year Battery Backup

First Alert 8E Photo Micro Smoke Detector 10 Year Battery

First Alert 2pk 10-Year Battery Photoelectric Smoke Alarm with Slim Profile

The Things We Leave Unfinished - by Rebecca Yarros

First Alert Alarm Smoke DC10 SM210CO400: 10-Year Smoke & Carbon Monoxide Detector, Battery Operated, White, 2-Pack

First Alert Alarm Combo DC RFID SMCO500V Clam Tray: Smoke & Carbon Monoxide Detector, Battery Included, 10-Year Warranty

First Alert Alarm Smoke DC10 SM210 Clam Tray: 10-Year Lithium Ion Battery, Fire Alarm, No Hardwired Installation Required

Guts - by Raina Telgemeier (Paperback)

First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup

First Alert Alarm Smoke DC10 with LGT SM210L Clam Tray: 10 Year Warranty, Lithium Battery, No Hardwired Install Needed

Binding 13 (RDS Exclusive) - by Chloe Walsh (Paperback)

The First Time I Saw Him - by Laura Dave (Hardcover)

First Alert® SMI100 Battery-Operated Smoke Alarm