The Dread Doctors sure do have a way of getting into people's heads... and we're not talking about power drills.

This week's "Teen Wolf" was more disturbing than usual -- it was a bit more real, more personal for our friends in Beacon Hills. Scott and his pack decided to take Valack's advice and read "The Dread Doctors" tome, despite the fact that doing so could have dire consequences. Hey, we get it -- in order to beat the evil MDs, you need to understand them. But when the gang gathered for Book Club, the end result was a slew of sinister childhood flashbacks. Minus Kira, of course, because foxes can't read. Which foreboding flashback shook you the most?

Malia & The Desert Wolf

The werecoyote long blamed herself for the wreck that caused the death of her adoptive family... until recently, that is. Turns out, her own biological mother -- the mysterious Desert Wolf -- shot at the car, causing it to veer off the road.

Lydia & Her Grandmother

The banshee finds herself walking through Eichen House (shocker! Lyd is always roaming the halls of the mental institution), where her mother is yelling at her to get back in the car. Her grandmother Lorraine is lying in a bathtub next to a bloody drill bit -- a hole has been drilled into her skull. She then says, "They're coming, Lydia. They're coming for all of us."

Scott & His Dog

Scott's memory depicts himself as a shaken young boy being rolled on a gurney, interspersed with flashes of two dogs viciously fighting. The boy is holding a bloody leash and crying for his beloved dog Roxy, who didn't make it.

Stiles & His Mother

Stiles, also at the hospital, has a vision of his mom Claudia, who has been suffering from dementia. He follows her onto the roof where, in her paranoid state, she angrily accuses a 10-year-old Stiles of trying to kill her.

So tragic, and they all hit a little too close to home for the group of friends. Which memory was the creepiest? Comment with your thoughts, and tune in this Monday at 10/9c for an all-new episode.