While everyone will be tuning in this fall to finally meet their mother (could it be Katie Holmes?), the minds behind CBS’s How I Met Your Mother are already looking to the future.  After a bidding war, Fox has greenlit a pilot from HIMYM co-creators/executive producers Carter Bays and Craig Thomas, as well as executive producer Chris Harris, titled The Goodwin Games. THR reports that the single-cam sitcom will follow three siblings who reunite after the death of their father.Fox has also picked up a new one-hour series from the CW’s The Vampire Diaries and The Secret Circle progenitor, Kevin Williamson.  The untitled thriller series involves a technologically savvy serial killer who creates a social network of fellow murderers and the FBI agent caught in the midst. (If only Dexter was better at computers, then he wouldn’t have to keep Harry around for company.)  THR reports that Williamson will stay on as writer and executive producer with his Outerbanks Entertainment in association with Warner Bros. TV.