Zekial Marko (October 21, 1933 – May 9, 2008)[1] was an American writer[2] who specialised in crime stories, often under the pen name of John Trinian.[3] He was arrested during filming of Once a Thief and spent some time in prison.[4][5] He died of complications related to emphysema on May 9, 2008, in Centralia, Washington.[6]