“They did the ‘Monster (Sour) Mash’!” Cocktails with Corpses at MOSH is an adult camp-in featuring a cocktail hour offering with ghoulish libations, a horrifyingly good buffet, Jacksonville’s Chief Medical Examiner Valerie Rao, who shares her experiences of literally dealing with the dead, a “Practice Safe Hex” show, candy/alcohol pairings and telescope viewings on the rooftop, palm reading and tarot cards, Ouija board action, and a screening of Night of the Living Dead, in the planetarium. 6:30 p.m. Oct. 22-8 a.m. Oct. 23, Museum of Science & History, Southbank, $125; MOSH members get 20 percent off; ages 21 and up, themosh.org.