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.
The team investigates a case involving the abduction of several women, one of whom was never reported missing.
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.
A killer uses online ads to find perfect candidates for murder: men no one notices are missing. Meanwhile, Jane finds that keeping her pregnancy quiet will be a tough assignment.
