Biggest and Baddest (8 p.m., Nat Geo Wild) – The fetching Niall McCann travels to Venezuela to capture and measure the largest anacondas in America in the first episode of a new series about large creatures. While in the Amazon, Niall hears stories from locals about giant snakes that have killed and eaten people. As you can see from some of the photos from the Nat Geo Wild press site, Niall spends a lot of time shirtless. Set your DVR.
Cold Justice (8 p.m., TNT) – The team must tackle the baffling, high-profile case of a former dancer who was cornered and shot in her West Palm Beach apartment.
Whose Line Is It Anyway? (8 p.m., CW) – Actress Heather Morris and comic Brad Sherwood are the guests.
Catching Monsters (10 p.m., Discovery) – The first episode of this new series focuses on fishing for the monster Atlantic Bluefin Tuna in the North Atlantic Sea.
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Preach (10 p.m., Lifetime) – A new 6-episode docuseries following four powerful female leaders who believe God has given them the ability to heal the sick, see the future and rid people of their addictions. Known as “Prophetesses,” these women speak as the interpreter through whom the will of God is expressed, and in order for their legacy to continue, they must enlist a “protégé” and teach them how to carry on their gift.
Bitten (10 p.m., Syfy) – Elena, Clay, Paige and Nick try to find Aleister only to discover his sinister endgame for Savannah. Also, Jeremy helps Ruth delve into Left Hand magic in order to take down Aleister from afar.