Guest Stars Bailey Chase as DEA Special Agent David Lang Spencer Grammer as K-9 Officer Jenn Cassidy James Colby as Bomb Unit Sergeant Ray Dwyer Co Starring Meighan Gerachis as Forensic Officer Miriam Lee as Paramedic Nathan Hosner as Dr. Lewis Rand Jessica Bess Lanius as Susannah Webber Atra Asdou as Shauna Craig Spidle as Dr. Isaac Webber Erika Haaland as Abby Goulding Alex Stage as Spencer York