Season 1, Episode 13 - House of Reunion/House of Memories
Victor announces that Alfie drank cleaning fluid. Nina tries to distance herself from Sibuna but still can't help solving the latest riddle leading them to an old "beleathered and clasped" dictionary which can only be opened with her locket (also, the locket only works when Nina wields it). While visiting Alfie in hospital, Patricia finds Rufus in a catatonic state. Patricia rescues Rufus from the hospital and hides him in the woods where he meets the others and warns Nina to give the locket back to Sarah. The gang manages to read a secret message hidden in the dictionary which gives them their next clue. Unfortunately, while Nina and Fabian are cracking the clue, Victor catches them and forces them to hand over the next puzzle piece.