What to Watch on Tuesday: Ducky comes clean on ‘NCIS’

NCIS (8 p.m., CBS) – The murder of a retired retired Navy Lieutenant Commander forces Ducky to disclose his participation in a secret society devoted to solving cold cases.

The Gospel According to Mac (9 p.m., ESPN) – In this “30 for 30” documentary, the polarizing beliefs and on-field successes of former Colorado football coach Bill McCartney.

iZombie (9 p.m., CW) – Liv, Babineaux and Ravi investigate a peewee coach’s death.

Wicked City (10 p.m, ABC) – Serial killer Kent struggles after realizing that his girlfriend Betty doesn’t trust him.

Frontline: Terror in Little Saigon (10 p.m., UNC-TV) – An investigation into murders and attacks against Vietnamese-American journalists uncovers a trail from American cities to the jungles of Southeast Asia.

Drunk History (10:30 p.m., Comedy Central) – This episode focusing on New Mexico history includes the truth behind the Roswell UFO conspiracy.

This story was originally published November 3, 2015 at 1:00 AM with the headline "What to Watch on Tuesday: Ducky comes clean on ‘NCIS’."