Major Crimes (9pm, TNT) - Christmas vacation is interrupted for the Major Crimes Division when a baseball scout is found dead in his RV. The squad works through the murder case, unfolding a complicated kidnapping scheme. Meanwhile, Rusty opens up to Dr. Joe about his mom.
Also on tonight . . .
How I Met Your Mother (8pm, CBS) - A guy at the wedding intentionally stirs up trouble among the gang, and the prodigal Marshall finally makes it to the Farhampton Inn.
The Voice (8pm, NBC) - The final singers perform. A winner is announced in the finale tomorrow night at 9.
Almost Human (8pm, Fox) - A suspicious death at a hospital, where a man predicted the exact time he would die, leads to the discovery of a black market for vital organs and biomechanics hearts that can be remotely shut off.
Mom (9:30pm, CBS) - Bonnie begins dating Chef Rudy, with Christy stuck in the middle. Jon Cryer directed this episode.
The Sing-Off (10pm, NBC) - The seven remaining groups perform past hits.