Who Do You Think You Are (8pm, NBC) - Rita Wilson takes a big fat Greek journey to trace the highs and lows of her father's life. Her travels also take her to Bulgaria.
Grimm (9pm, NBC) - Nick (Dave Giuntoli) and Monroe (Silas Weir Mitchell) investigate the murder of a spice-shop owner and the victim's sister may prove to be an ally for Nick. Also, Capt. Renard recruits Adalind to hex Hank and Sgt. Wu gets caught up in Adalind's scheme.
Fringe (9pm, Fox) - A case is familiar to Peter but brand new to the rest of the team.
Fairly Legal (9pm, USA) - Kate mediates a dispute between a fishing boat captain and an injured deckhand. Elsewhere, Nicastro encourages Lauren to date.
Blue Bloods (10pm, CBS) - Danny faces a moral dilemma over whether to arrest a suspect who may be linked to a robbery.
Merlin (10pm, Syfy) - In the Season 4 finale, Camelot is lost and Arthur is unsure that he should be king. Merlin tries to boost Arthur's confidence by leading him to the legendary Excalibur sword and encouraging him to remove it from the stone.