While "Trust No One" is not the title for these, Episode 13 is often a pivotal finale or turning point in many series: SGRoA: Vampire Diaries, S1 E13: Children of the Damned
Vincent attempts to win Cat back with gifts, including cut flowers, chocolates, and even a street dancer flash mob, though Cat remains unimpressed. Side Stories: [S1E13] Trust No One
Heather starts a new job and falls for Joe's younger brother, Darius. While "Trust No One" is not the title