Christine Lahti Returns as McGarrett's Mother on 'Hawaii Five-0' (PHOTOS) CBS
Grover (Chi McBride) and McGarrett (Alex O’Loughlin)
McGarrett searches for his mother
Junior (Beulah Koale), Danny (Scott Caan), and Tani (Meaghan Rath)
Adam (Ian Anthony Dale) and Grover
What’s McGarrett looking at?
Christine Lahti returns as Doris McGarrett
Steve and Doris McGarrett
What’s on the wall behind him?
Who or what does McGarrett have in his sights?
Alex O'Loughlin) is heading to Mexico in Friday's episode of . Hawaii Five-0
Christine Lahti returns as Steve's mother, Doris, when the CIA informs her son that she's gone rogue on her undercover mission and may have killed her partner. Can he bring her home and prove she's innocent? O'Loughlin wrote and directed the episode.
The CBS series toasted to its 10th season while also bidding farewell to a longtime member of the team.
Click through the gallery above for a look at McGarrett in Mexico, reuniting with his mother, and more.
Hawaii Five-0, Fridays, 8/7c, CBS