Here's the official guide of NCIS: Los Angeles season 4 episode 23 "Parley". This episode airs on Tuesday, May 7 on CBS.
DEEKS GOES UNDERCOVER TO OBTAIN INTEL ON A FORMER INTERNATIONAL ARMS DEALER AND BEFRIENDS A FEMALE SOURCE IN THE PROCESS --
- Deeks goes undercover to obtain information about an infamous arms dealer looking to get back in the business, but the woman he befriends leads the operation in a dangerous directon.
- Meanwhile, Kensi confronts new emotions as she runs surveillance on Deeks and his female source.