VIDEO: Sneak Peek - 'There's Something About Mary' Episode of SUPERNATURAL

On the next episode of SUPERNATURAL titled "There's Something About Mary", Sam (Jared Padalecki) and Dean (Jensen Ackles) are alarmed when they learn hunters are being killed by suspicious "accidents" all over the country. They decide it is best to find Mary (guest star Samantha Smith) and make sure she's safe. Meanwhile, Toni (guest star Elizabeth Blackmore) is back in the states and she and Mary face off. PJ Pesce directed the episode written by Brad Buckner and Eugenie Ross-Leming. The episode airs Thursday, May 11 on The CW. Get a sneak peek below!

The thrilling and terrifying journey of the Winchester brothers continues. Sam (Jared Padalecki) and Dean (Jensen Ackles) have spent their lives on the road, battling every kind of supernatural threat. Over the years, after dozens of bloody adventures, they have faced everything from the yellow-eyed demon that killed their mother to vampires, ghosts, shapeshifters, angels and fallen gods. They even came face to face with LUCIFER and the Four Horsemen in averting the Apocalypse. With the help of allies - both human and supernatural - they've discovered that every threat they vanquish opens a new door for evil to enter in.

From Warner Bros. Television in association with Wonderland Sound and Vision, with executive producers McG ("Charlie's Angels," "The O.C."), Robert Singer ("Midnight Caller"), Jeremy Carver ("Being Human"), Phil Sgriccia and Adam Glass.