JOLIET TOWNSHIP — Hours after trying out for a spot on the “Family Feud” game show, a Joliet Central High School security guard shot his new wife to death early Monday and then turned the gun on himself, sources said.

Marcus T. Crosby and family members tried out for the popular game show on Sunday, but his wife, Kearra Hosey did not, according to a source with knowledge of the investigation. A person at the couple’s home, who did not want to be identified, confirmed the tryout. A spokeswoman for “Family Feud” said production staffers were in transit Monday and could not confirm the appearance. . .