McCrum's 2022 book on the scandal Money Men: A Hot Startup, A Billion Dollar Fraud, A Fight for the Truth was adapted by Netflix as the documentary called Skandal!.

[2] According to McCrum's personal website, he had worked as a paperboy at a newsagent's shop owned by his family, and lives with them in St Albans.

[5] In summer 2014, McCrum received a tip from hedge fund manager John Hempton on potential fraud at Wirecard, a German financial services firm.

After a trip to Manama, Bahrain found an apparent local client of Wirecard to be bogus, McCrum brought his findings back to Alphaville.

During this period, McCrum continued investigating Wirecard's claimed Asian clients along with Singapore correspondent Stephania Palma.