On Halloween, Magnum and Jin search for a skip-tracer at a Halloween bash, just as Katsumoto tracks an escaped killer who is headed to that same party. Also, Higgins and Rick must spend the night at an allegedly haunted house in order to debunk the notion, and TC and Kumu protect a sacred Hawaiian burial ground.
- Rick says his Robin Hood costume is the from this movie.
- T.C. says Rick's costume must be the Robin Hood from this movie
- Hayden Szeto is the guest appearance in this episode.
- Jay Hernandez as Thomas Magnum
- Perdita Weeks as Juliet Higgins
- Zachary Knighton as Orville "Rick" Wright
- Stephen Hill as Theodore "T.C." Calvin
- Tim Kang as Detective Gordon Katsumoto
- Amy Hill as Teuila Tuileta
- Hayden Szeto as Pono Palima
- Dan Southworth as Kanoa
- Shane Miyashiro as Uni
- Zane Rawlins as Skeleton Boy
- Raiden Barrientos as Younger Boy
- Eve Brenner as Helen
- Alexa Luczak as Mermaid
- Ryder Tadaki as Pono's Son
- Kordell Kekoa as Kahu