The Seven Year Itch

S6 E5: Nick (David Giuntoli) and Hank (Russell Hornsby) join Wu (Reggie Lee) to investigate a bizarre murder in a local park. Elsewhere, Capt. Renard (Sasha Roiz) continues to deal with a ghost from his past. Meanwhile, Monroe (Silas Weir Mitchell) and Rosalee (Bree Turner) visit the doctor to see if Diana's (guest star Hannah R. Loyd) premonition is true. Back at the loft, Adalind (Claire Coffee) finds a very weak Eve (Bitsie Tulloch) in the tunnels and mysterious drawings scrawled on the walls.