Mystery Island success raises plans of expansion, and the Island team meets their Mystery Mountain counterparts for a friendly murder game, but the fun ends with a murder in plain sight.
| Actor | Role |
|---|---|
 Elizabeth HenstridgeDr. Emilia Priestly | Dr. Emilia Priestly |
 Charlie WeberJason Trent | Jason Trent |
 Kezia BurrowsBaroness Jane Alcott | Baroness Jane Alcott |
 Francisco LabbeCarlos Del Fuego | Carlos Del Fuego |
 Donald Sage MackayDe. Stanley Wellington | De. Stanley Wellington |
 Jules KnightDex Longstrength | Dex Longstrength |
 Suanne BraunMorgan Bennett | Morgan Bennett |
 Ava BrennanRegan Jones | Regan Jones |
 Sophie MeisterInga Sorenson | Inga Sorenson |
 Hadrian HowardKhaleef Brooks | Khaleef Brooks |
| EEdward FranklinTom Robinson | Tom Robinson |