Suburgatory (8:30pm, ABC) - George tries to change Dallas' low opinion of Halloween by showing her the fun side of fear, but he's in for a shock when her frequently traveling husband (Jay Mohr) comes home unannounced. Meanwhile Tessa's costume rubs the locals the wrong way. Note: "Modern Family" is a re-run tonight.
Nova: Iceman Murder Mystery (9pm, UNC-TV) - An autopsy on the 5000-year-old remains of Otzi the Iceman, the mummified corpse recovered from a glacier in the Italian Alps in 1991, reveals details of life during the Copper Age, including people's diet and the types of diseases they dealt with.
Happy Endings (9:30pm, ABC) - Jane and Brad spend a spooky evening house-sitting for suburban friends, while the rest of the gang celebrate Halloween at a warehouse party.
American Horror Story (10pm, FX) - In the first of episode in a two-part Halloween story arc, the line between the living and the dead is blurred at the mansion, where two previous residents give the Harmons some decorating advice. This one looks scary! Also, Rubber Man returns. (Part 2 airs November 2).
Revenge (10pm, ABC) - The Graysons begin to distrust their top security man, who refuses to go away quietly. Meanwhile, the tension between Emily and Tyler can no longer be contained.
Psych (10pm, USA) - Shawn and Gus suspect that Lassiter's mysterious new girlfriend (Kristy Swanson) could be responsible for a murder in which the victim's blood was drained.
Whitechapel (10pm, BBC America) - A new detective inspector investigates what looks to be an open-and-shut case involving the murder of a woman in London's East End, but things get complicated when the killings appear to be similar to one credited to Jack the Ripper more than 100 years earlier.
Penn & Teller Tell a Lie (10pm, Discovery) - Penn & Teller present six stories (such as how panning for gold can be done in the streets of New York City) and one of the stories is false.