There were numerous successful Allied escapes from the (supposedly) high security POW "camp" in Colditz Castle (overlooking the town of Colditz in the German state of Saxony, which became part of East Germany after the war). Wikipedia covers the attempts with links to other details.

Mario Bosch has a long list of Colditz books in his collection -- spanning several languages.

One of the originals, Pat Reid's 1952 "Escape from Colditz" is available from Archive.org for those with an encryption key from the Library of Congress' National Library Service for the Blind and Physically Handicapped.

For the rest of us, Archive.org offers a free download (in several formats) of "Colditz: The German Side of the Story" (1962), an English translation of a book by Reinhold Eggers, the German Security Officer at Colditz.

Peter Krug's capture and trial was covered in the July 13, 1942 issue of Time Magazine:

Into a crowded Detroit courtroom strutted 22-year-old Oberleutnant Hans Peter Krug, cocky in the slate-blue uniform of the Luftwaffe. He clicked his heels, saluted a startled bailiff. German-English dictionary in hand, he mounted the witness stand.

Dark, sharp-faced Peter Krug, who had been shot down over Britain, had escaped in April from a Canadian prison camp. He made his way to Detroit, there met a naturalized German named Max Stephan, who ran a small tavern and still loved his Vaterland. Short, pudgy Max Stephan gave the fugitive money, food & drink. He helped the Nazi flyer on toward Mexico. But Peter Krug was caught in San Antonio. Last week he turned on Kamerad Stephan.

Blandly the cool young Nazi indicated that he had no further use for the tavern-keeper who had the stupidity to be caught. Peter Krug informed the court: "It is not my intention to testify against Max Stephan. I have only to clear out the facts and tell the truth." Coldly, in a heavy guttural, he told the facts in detail. The jury took but 83 minutes to convict Max Stephan of treason, the first such conviction under Federal statute since the Whiskey Rebellion trials in 1795. Since the Government did not demand his death, Max Stephan will probably escape the hangman.