Watch Big Top Scooby-Doo! (2012) HD Full Movie Free on SolarMovie. Watch Big Top Scooby-Doo! (2012) online free. Scooby-Doo and the gang go on vacation to Atlantic City, but they get involved in a mystery at a cir...Scooby-Doo and the gang go on vacation to Atlantic City, but they get involved in a mystery at a circus.