This is a “former” OSS agent. What you linked is the official story. Doesn’t mean it is true. Of course, he could have just died in his sleep at the age of 46 as they claim.
He has an interesting history in the OSS. Given some of his comments in secret correspondence ..there is a question as to how he ended up with a Rabbi on his team who developed an espionage network.
btw, for those not up to speed on the OSS, Balkans was the name of the game for the Cairo OSS office
“Extract of Letter From Penrose Dated 3 March 1944,” describing the multiple interrogations of the “bodies which X-2 brought down from Istanbul,” 3 pp. The bodies were those of a Mr. and Mrs. Kleckowski and one Wilhelm Hamburger. The memo describes difficulties in carrying out the interrogations, commenting that “the lack of collaboration between X-2 and SI might produce most unfortunate results.”