Maddie fears for herself and her co-workers when the call centre is taken hostage. Meanwhile, Buck, Chim, and Athena work together to find out what's really going on with dispatch.
Holmes and Watson join the manhunt to find the murderer of two paramedics. Important information learned about Alfredo, strains his relationship with Holmes.
A finalist of World Series of Poker is gone missing, so Lightman, Foster and Reynolds got to Vegas to investigate his disappearance.
The team heads to Cuba on an unsanctioned mission after Callen gets a lead on the possible whereabouts of Anna Kolcheck.
Rosie investigates the death of a female astronaut, while Villa's estranged brother turns up in Miami.
