TOP PICK: ‘CSI‘ (9pm ET on CBS)
In the conclusion to the much-hyped ‘CSI Trilogy’ crossover, the CSI team helps Langston investigate a prostitution ring that may have harbored a hostage Langston had been looking for in Miami and New York.
KEY EPISODE: ‘Project Runway‘ (10pm on Lifetime)
It’s part one of the finale as Carol Hannah, Irina, and Althea battle it out to see who has what it takes to “make it work” at Fashion Week and be the winner this season.
WATCH: ‘The Office‘ (9pm ET on NBC)
Michael’s world is rocked by troubling rumors about Dunder Mifflin. He forces the office into a day of strange diversions, upsetting Jim and leading others to wonder if Michael has gone insane. Meanwhile, Andy finds that his chief obstacle in courting Erin (Ellie Kemper) is his own awkwardness.
DVR: ‘Fringe‘ (9pm ET on Fox)
When a kidnapping rapidly escalates into a hostage situation in New York, local authorities close in on the suspects only to discover a mysterious force with mind-blowing consequences. As the investigation intensifies, the mystery and threat deepen to unimaginable proportions when the Fringe Division connects a link between the kidnapping and Massive Dynamic.
DVR: ‘The Vampire Diaries‘ (8pm ET on The CW)
Bonnie is having terrifying dreams about one of her ancestors. Despite Elena’s efforts to smooth things over, Bonnie and Caroline continue to argue over the medallion. When the girls hold a seance to help them decide what to do, the results are stranger than any of them expected. Matt comes to Caroline’s aid when she needs a friend. Damon finally reveals to Stefan the stunning reason he has returned to Mystic Falls.