A full moon keeps the crew busy with crazy calls; Athena investigates a potential home invasion; Abby helps investigate a caller's murder; Bobby and Buck have their hands full at a yoga studio for pregnant women; Hen's past may become her future.
Reid and Prentiss are taken hostage when they go under cover to investigate possible child abuse at an underground cult.
Jane and Fischer investigate a murder at an oil fracking site, while Rigsby and Van Pelt travel to Austin to reunite with the team and help investigate suspects in the string of attacks on former CBI team members.
The first responders rally together to search for a missing Maddie.
A high-stakes domestic disturbance involving a father and his two young daughters leads the team to race against the clock to save a group of international activists.