"The Mississippi Mystery" - Part Five
  Part Five               There was one clue Tyler picked up on the killer – he wore a black raincoat. “Only the higher-ranking officials aboard the Jefferson  wear those coats, in the event of a storm,” Clemens noted.               “And yet there wasn’t one the night of the murder,” Rania indicated.               “No, there was not,” Clemens concurred with a wary tone.               “We can rule you and Mr. Grant out as possible suspects,” Rania told him. “That would leave other high-rank officials, like the chief engineer, the ship doctor, and your Second Mate…”               “Mr. Casey, yes,” Grant said. “I wanted to question him last.”               “If ...