NCIS: LA Boss Previews Callen and Sam's Suicide Mission, Hetty's Tragic Loss, a 'Dramatic' Return and More

The Season 5 finale of CBS' NCIS: Los Angeles — as it was titled — left Sam and Callen in "Deep Trouble," locked inside a small sub rigged with explosives and headed for a target unknown, and with no way to contact their colleagues. Hetty meanwhile pulled another of her disappearing acts, and Deeks realized […]