Devil in Chelsea [Outdoor]

A body is found on the banks of the hudson after playing a mysterious game. The only way to catch the killer? Joining the next round of a mysterious game. Assisted by sherlock holmes, complete the game-master's fiendish challenges, scouring their words for hints as to their identity. The places they take you, the way they speak, anything could be a clue. The clock is ticking. Identify them before time runs out or you might be their next victim.