LOS ANGELES -- Prime-time leader CBS is tweaking its schedule to bring midseason shows aboard. Joining the CBS lineup is spinoff series "Criminal Minds: Suspect Behavior," which will debut Feb. 16. Other newcomers are the comedy "Mad Love," debuting Feb. 21, and the spy drama "Chaos" starting April 1. As part of the shuffle, the Tom Selleck police drama "Blue Bloods" will move to 10 p.m. Wednesday for four weeks beginning Jan. 19, then return to its 10 p.m. Friday home in February. "Rules of Engagement," now airing Monday, will pair with sitcom sibling "The Big Bang Theory" on Thursday at 8:30 p.m. ET starting Feb. 24. It's replacing "(Bleep) My Dad Says" with William Shatner, which will wrap for the season. "The Defenders," starring Jim Belushi and Jerry O'Connell, will end its season run with a shift to 8 p.m. Friday starting Feb. 4. CBS didn't announce whether it or the Shatner comedy will be renewed for next year.