"Criminal Minds" season 10 spoilers are revealed when the Twitter photo uploaded by the writers teased a creepy start. "Dawson's Creek" alum Kerr Smith, meanwhile, will be joining the show as he portrays a killer with a weird fetish.

The official Twitter of "Criminal Minds" season 10 revealed two video editors watching what looked like one of the episodes, along with this caption: "Getting settled in on the set of #criminalminds EP10x01 Day 3 of 8."

Another Twitter image revealed "Criminal Minds" season 10 spoilers as it shows what looked like a hacked off leg, which points to a new killer with a creepy fixation.

The TVLine revealed "Criminal Minds" season 10 spoilers as well when it reported that Kerr Smith was added to the cast as a killer.

"The 'Dawson's Creek' alum will play Frank Cowles, a creepy everyday man who turns out to be an acromotophile," it said. "And for those of who not familiar with the term, it's a dude who collects limbs."

Earlier, TVLine dished out "Criminal Minds" season 10 spoilers when it revealed that Jennifer Love Hewitt will play the role of Kate Callahan, an undercover agent from the FBI who was transferred to the Behavioral Analysis Unit due to her "stellar work."

Showrunner Erica Messer told the website: "We're thrilled to introduce a new special agent by adding the very talented Jennifer Love Hewitt to our amazing cast. Many of us on the show have enjoyed working with her over the years and look forward to again. We have exciting storylines planned for her character and the entire BAU team as we head into our 10th season."

A.J. Cook (Jennifer Jareau) also dished out "Criminal Minds" season 10 spoilers to Zap2it blog as she said that the first episode will pick up where they left off "in the middle of that shootout guns a blazing."

"We also learn a huge secret about one of the other characters that will forever change the face of the BAU," she said.