S4, EP5 "A.C.H."
When a new designer drug hits the streets, Officer Nolan and the team have a Halloween they won't soon forget; Lucy questions whether her apartment building might be haunted.
S4, EP4 "Red Hot"
Officer Nolan and Officer Chen search for a missing person who may have international ties, putting everyone's lives in danger; Harper continues the search for a serial arsonist; Wesley must overcome an impossible task.
S4, EP3 "In the Line of Fire"
Officers Nolan and Chen report to a structure fire and suspect that there is more to the situation than meets the eye; after a sniper shooting, the team searches for the shooter and discovers that the perpetrator has a connection to one of its own.
S4, EP2 "Five Minutes"
Officer Nolan and Officer Chen's run-in with an infamous thief tips them off to a potentially big heist surrounding the Getty's big gala event; Nolan works up the courage to ask Bailey out on a date.
S4, EP1 "Life and Death"
Officer Nolan and the entire team race against the clock to locate Lopez after she is kidnapped on her wedding day, not only to save her life but her unborn child's.