“The Kid Detective” (*1/2 out of four) was a listless melodrama about a once-celebrated child detective who grows up to be a disheveled and hungover has-been (Adam Brody) who makes his living as a sticky gumshoe but finds perhaps a sense of redemption when a female client (Sophie Nelisse) hires him to find out who brutally murdered her boyfriend. Curiously glum and flat movie fails to engage on any level, despite Brody’s game performance. Film’s ending is genuinely bizarre but at least it’s over afterwards.