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|Full name||Arthur Cosmo|
|Cause of death||Crushed|
|Appears in||Criminal Case|
|First appeared||Case 3: Sink or Swim (s1)|
Arthur Cosmo (1986-2018) was a suspect in the murder investigations of model Mathilda Krysten in Sink or Swim (Case #3 of Rosenoque) and yacht owner Floating Richard in Biting the Dust (Case #6 of Rosenoque). He was later murdered in The Party Comes Crashing (Case #7 of Rosenoque).
Events of Criminal Case
Killer and Motives