S5E4 · Insolubilia

Complete story — includes the ending

Gator and his crew invade the Lyon house wearing Halloween masks but Dot recognizes Gator. She manages to fend off the assailants, but in the process, Wayne is nearly fatally electrocuted from one of her traps, which sets the room on fire. Her family and Gator's crew manage to escape before the fire department arrives. Roy approaches his house and discovers the deputy guarding it has been killed. He follows Munch's footprints to his daughters' bedroom, finding the children untouched, but an arcane symbol drawn on the wall in blood. With Wayne recovering in the hospital, Witt and Indira show up to question Dot, but are rebuffed by Lorraine's attorney Danish Graves. FBI agents Joaquin and Meyer suspect Roy of providing weapons to a local right-wing militia led by his father-in-law, Odin Little, but their boss, fearing retaliation from the militiamen, refuses to support an investigation. Roy visits the house of the couple he had earlier counseled about domestic violence. Seeing more bruises on the wife, Roy goads the husband into pulling a gun, only to fire his own gun first and kill him. Roy tells Gator to frame the dead husband for Munch's crimes at the gas station to stop the police investigation.