 " Say Hello to My Little Friend " marked the first appearance of Hawkins , a detective who was described as a titular " little guy " , from the series ' second episode , " The Little Guy " . Weisman obtained a recurring role in January 2012 and later garnered the role of the character . He was later revealed as the man who caused the Britten family 's collision . This entry 's production code was " 1ATR10 " . It was filmed in Los Angeles , California . 
