"Beast Legends" (Syfy, 10 tonight) is a goofy, educational romp, a show that takes itself seriously, even when it shouldn't.
The premise is this: over six episodes, a team takes on mythical creatures, exploring their origins, and gathering enough research to recreate it in 3D CGI in the "Beast Lab."
First up is the kraken, the giant sea creature made famous in "Clash of the Titans." The multi-cultural team -- a comic book artist, an adventurer, a biologist, and a legends expert (aka anthropologist) -- take on different aspects to learn about the beast. That includes talking to someone who has encountered a giant squid, catching a giant octopus to examine it, and climbing a ship's mast to see how big and strong the tentacles need to be to turn over a boat. In the lab, they debate whether their creation should have armor or lasers to shore up its super strength.

Rookie Blue (9pm, ABC) - In tonight's 2-hour season finale, the rookies face evaluations to determine whether or not they keep their badges, and Andy thinks about quitting the force altogether. But first, Andy and Chris make an arrest and unwittingly compromise a major drug sting. Andy tries to salvage the sting by going undercover with Swarek, but both their lives are endangered. Also, Dov learns a hard truth about his girlfriend and must choose between the job and his love life. Hopefully, WTVD won't pre-empt this again for another Carolina Panthers game.