Join the Mystery Inc. gang as they take on their biggest challenge yet! When they're invited to Spooky Island, a popular amusement park, they soon discover that the attractions aren't the only things that are spooky. Strange things are happening, … Freddie Prinze Jr., Sarah Michelle Gellar, Matthew Lillard, Linda Cardellini, Rowan Atkinson, Miguel A. Núñez Jr., Isla Fisher Added on Netflix 2021-06-01. Youtube Trailer