Although little screen time is initially devoted to the personal relationship between Danny and Lindsay in the fourth season, they were assumed to be dating. Midway through Season 4, a boy in Danny's neighborhood is killed during a neighborhood robbery. Blaming himself for the boy's death, Danny begins to push her away in grief, and falls into an affair with the boy's mother. Lindsay confronts him about pushing her away and is hurt when he is withdrawn and aloof. She tells him that she is not mad at him, but at herself for having fallen in love with him and that she will find a way to fall out of love with him. Danny later tries to apologize, but they are interrupted, called away on a case.