'Velma' review: A bizarre take on 'Scooby Doo's brainiac

There's a comfort to Scooby Doo's formula: Meddling kids (and one lovable dog) untangle a spooky mystery and unmask a villain. Rinse and repeat!

Of course, there have been several variations on this theme. Since our introduction to Mystery Incorporated in 1969, countless spin-offs have tinkered with the main Scooby lore....