According to Historynet, Heenan was born in Reefton, New Zealand in 1910 to a single mother. She met a man named George Heenan and the pair traveled to Burma with an infant Patrick, posing as a happy, married family. Patrick had a dark complexion, as his biological father was likely Indian or Maori, and this would plague his social status throughout his life. Heenan was not a particularly bright student, nor did he make many friends, described as a loner and a bore. When he made it to the British Indian Army, he was ridiculed and remained of low rank despite four years of service.

Granted “long leave” of six months, Heenan traveled to Japan. When he returned, he was skilled in photography and handling radio equipment, having been recruited as a spy for the Japanese, likely as revenge for his troubled childhood and service. When war broke out in 1939, Heenan for once impressed his commanders with brave, brutal performances in combat, and was finally promoted in October 1940. When the Japanese invaded Malaya in December of next year, Imperial Japanese aircrafts always seemed to know the correct “friend or foe” codes, though these would have been changed daily; this led to their overwhelming success in destroying Allied aircraft. A warm radio was found in Heenan’s quarters. He was arrested and sent to military prison in Singapore but was shot dead by guards before a formal trial.