Packages with gruesome contents are delivered to six people in the Washington, D.C.. area; Simmons and Kristy struggle to connect with their son, David, who is suspended from school for aggressive behavior.
Natalie throws a Fourth of July party and invites David as her date; Margaux ramps up her plan to remove anyone who stands in her way.
Duke is forced to steal crucial evidence from the police locker in exchange for his kidnapped granddaughter; Jerry goes under cover at a mental health facility to solve a murder.
Jen and Greg go to great lengths to find the perfect baby sitter for Lark; John becomes testy when shopping for a mattress; Heather learns information about Samantha's boyfriend that she isn't sure she should reveal.
The team investigates a case involving the abduction of several women, one of whom was never reported missing.
