Definitely one of the best episodes of the season..! A good, many layered mystery kept taut with good performances. The exchange between Harlan and Perry in the interview room was very well done. As a Catholic myself, I also much enjoyed the backdrop of the Fransiscan retreat and religious overtones, especially Fr Paul's recital of the story of Francesco Bernardoni -- St Francis of Assisi. The prospect of the disguised former Nazi in the works was a worthy side plot. The only negative points were the overused embezzlement and blackmail schemes. All-in-all it played out very well. A satisfying episode.