You are going to Watch What’s New, Scooby-Doo? Episode 31 online free episodes with HQ / high quality. Stream cartoons What’s New, Scooby-Doo? Episode 31 Online A Scooby-Doo Valentine, The gang investigates some mysterious disappearances of teenagers on Lovers Lane while Shaggy and Scooby catch up with old girlfriends. But the culprits behind it all turn out to be the gang themselves!