A STRING OF BRUTAL DEATHS MAY BE TIED TO AN UNLIKELY PERPETRATOR - After a series of brutal and deadly attacks, Nick (David Giuntoli) and Hank (Russell Hornsby) find an unlikely lead in a local nursing home. Meanwhile, Eve (Bitsie Tulloch) goes to Adalind (Claire Coffee) to get answers that only a Hexenbiest can provide. Elsewhere, Capt. Renard (Sasha Roiz) confronts Nick about the mysterious symbols and tries to strike a deal. Silas Weir Mitchell, Reggie Lee and Bree Turner also star.
The excerpt of the poem that Monroe recites to Rosalee, written by William Butler Yeats, is entitled "When You Are Old."
When Nick looks up information on Maddie Simms, the names Chris Lewis and Eli Thomashefsky are shown in connection to some of Maddie's recent online activity. This is a reference to crew members of Grimm, as Chris Lewis has worked as a Set Dresser since season 1, and Eli Thomashefsky has worked as the Department Head of Video Playback since season 1.
The location used for the site of the Westbridge Nursing Home, Rosemont Court, which is a northeast Portland retirement housing complex, was also previously used for the site of the Von Hamelin Music Institute in "Danse Macabre" in season 1.