How I Met Your Mother: Ted (Josh Radnor) finally meets his mystery girl in the Slutty Pumpkin costume. Meanwhile, Barney (Neil Patrick Harris) learns he is part Canadian, and Lily (Alyson Hannigan) has pregnancy brain, on The Slutty Pumpkin Returns episode at 8 p.m. on CBS. Katie Holmes guest stars as Naomi, the Slutty Pumpkin.
Two Broke Girls: Caroline (Beth Behrs) enrolls herself and Max (Kat Dennings) in a cake-decorating class to increase their skill level and take their cupcake business to the next level, on the And The Pretty Problem episode of 2 Broke Girls at 8:30 p.m. on CBS.
House: A CEO (Michael Nouri) falls mysteriously ill just days before he signs a contract that would relocate his company’s entire labor force to China. House (Hugh Laurie) attempts to make an underhanded business transaction with his wealthy patient, but when the patient’s condition worsens, the team must work around the clock to save his life. Meanwhile, Park (Charlyne Yi) prepares for her hearing with the Princeton Plainsboro Disciplinary Committee chaired by Foreman (Omar Epps), and Adams’ (Odette Annable) outlook on her patient’s business venture reveals her deeper feelings about loyalty in the Risky Business episode of House airing at 9 p.m. on FOX.
Hawaii Five-0: When the Five-0s investigate the murder of a young couple filming a spooky documentary about a traditional Hawaiian burial site, they are threatened by a drifter who puts a curse on Danny (Scott Caan), on the Ka Iwi Kapu episode of Hawaii Five-0 at 10 p.m. on CBS. Robert Englund (A Nightmare on Elm Street) guest stars as the drifter.