"Mythbusters" (9 p.m., Discovery) does a crossover of sorts with another popular Discovery show in "Deadliest Catch Crabtastic Special," with "Catch" captains Johnathan Hillstrand and Scott Campbell Jr.
Among the investigations: Will a crab pot drag you overboard and to the bottom of the ocean if your foot gets caught in a coil? News you can probably use before embarking on your next crab-fishing expedition.
You may also want to check out:
-- "Secrets of the Dead: Death on the Railroad" (10 p.m., WHYY 12). The series looks into the case of 57 Irish immigrants who were brought to Chester County to lay tracks for the railroad and ended up being buried anonymously, in 1832, in a ditch outside Malvern.