Evidence of Colonel Arbuthnot

Colonel Arbuthnot testifies he was talking with MacQueen until about 1:45 AM, then returned to his compartment. He smokes a pipe, and Poirot notes the pipe-cleaner found at the crime scene. Arbuthnot denies knowing Ratchett but admits he knew of Colonel Armstrong. He provides a character reference for Mary Debenham, calling her 'a pukka sahib.'