THE HERETICS THREATEN MARY AND BASH FIGHTS TO UNCOVER THE TRUTH — An attempt to scare Mary (Adelaide Kane) causes Queen Catherine (Megan Follows) to take drastic measures to make sure the guilty party is caught. Francis (Toby Regbo), aware of Bash and Mary’s growing attraction, turns to Olivia (guest star Yael Grobglas). Bash ventures into the woods to pay his debt — the human sacrifice the pagans demand — and returns with blood on his hands. Meanwhile, Kenna (Caitlin Stasey) comes clean with the girls about her affair with the King (Alan Van Sprang), to a mixed response. Jenessa Grant, Anna Popplewell and Celina Sinden also star. Bradley Walsh directed the episode written by Wendy Riss.