Ep. 9: Detectives visit Casino Island after a prophecy and face gambling debts and a kidnapped leader.
Aired on March 7, 2015

9
A ouija board prophecy directs the detectives to Casino Island for its opening ceremony. There, they encounter a girl named Anne Guardy who fell from the sky. While searching for an Element, the group becomes addicted to gambling and accumulates significant debt. Marine feels discouraged as Miki gains prominence within her idol group. The dealer Noir, possessed by the Decrescendo Element, challenges them to a high-stakes poker match involving the Elements. After winning several games through luck, Marine successfully navigates a treacherous game board without falling. Subsequently, the casino owner, Scarlet Ohada, kidnaps Marine and takes her into the sky.
Episodes
- Ep. 5 · Milky Holmes protect Carol Dodgson from a ransom note leading to a puzzle challenge
- Ep. 6 · Milky Holmes confronts imposter Marima over stolen views and a dancing spirit challenge.
- Ep. 7 · Nero's Personality Shift and the Rakugo Contest Challenge
- Ep. 8 · The Mystery's Solution is a Cliché! Before and After
- Ep. 9 · Detectives visit Casino Island after a prophecy and face gambling debts and a kidnapped leader.
- Ep. 10 · Noir and allies rescue Marine from Scarlet, who is possessed by the Crescendo Element.
- Ep. 11 · Marine and Miki confront each other over the Miracle Song and stolen Elements.
- Ep. 12 · Milky Holmes attend Marine's concert after solving cases and dealing with ticket issues