She smiled for the cameras. She comforted the family. No one suspected that the killer was sleeping in the room next door.

In this episode, I bring you the chilling true crime stories of sisters who hid horrifying secrets behind the mask of family loyalty. From the shocking case of Brittney Dwyer, who murdered her own grandfather in cold blood while her brother watched his family fall apart, to the sisters who spent nearly 50 years fighting for justice after Elizabeth Plunkett was taken by Ireland's first serial killers. Based on real police reports, confession letters, and court transcripts, this is a deep dive into betrayal, sibling bonds, and the moment detectives uncovered the unthinkable. Perfect for true crime enthusiasts, psychological thriller fans, and anyone fascinated by family secrets turned deadly. Turn down the lights, put on your headphones, and press play — because the sister you trust may be hiding something far darker than you ever imagined.

Become a supporter of this podcast: https://www.spreaker.com/podcast/red-tree-crime--6847553/support.