convergence-continuum presents Demon Baby, a lighthearted dark comedy at the Liminis Theatre at 2438 Scranton Rd. Tickets for the play are $12 general admission, $9 for students and seniors. For information and reservations call 216-687-0074 or http://www.convergence-continuum.org. The play opens Friday, Nov. 30 and runs Thursdays, Fridays and Saturdays at 8:00 pm through Dec. 22.  Thursday shows FREE FOR TREMONT RESIDENTS, thanks to a grant from the Neighborhood Connections program of the Cleveland Foundation.  Call ahead for reservations or show up and sign in before 8:0