Stationed with the Criminal Investigation Branch in Brisbane, he was promoted to sergeant in 1939 and inspector in 1949. He studied in Britain and Europe, returning to Australia in 1950 and investigating the Bulimba elections fraud. Described as 'the Big Fella' – Bischof was tall and weighed – he gained thirty-two convictions in thirty-three murder investigations. In 1955 he became head of the CIB. In January 1958 Bischof was appointed Commissioner of Police by Premier of Queensland, Frank Nicklin. The appointment was criticised as a political one by the oppositionLabor Party, which felt that at least two other senior officers were more suitable. Tony Fitzgerald, who between 1987 and 1989 headed a commission of inquiry into corruption in Queensland, commented on page 31 of his report that the appointment of Bischof, who was a Mason, marked a deliberate transition away from the previously dominant Irish-Catholic "Green Mafia" influence in the Queensland Police, particularly since Bischof was appointed over the head of the more senior James Edward Donovan, a Catholic. As commissioner, Bischof set about boosting police morale and the image they portrayed to the Queensland public. He implemented a series of transfers and promotions, and set up a Public Relations Bureau as part of his plans. He attended many public functions to encourage co-operation with, and support for, the Queensland Police. In 1959 he was named Queensland's first 'Father of the Year', even though he was childless. However Bischof was an inveterate gambler, which undoubtedly led him into very shady territory. Fitzgerald's report says: During Bischof's tenure, there was persistent criticism of Bischof's management of the police force. Allegations and suggestions were made in parliament of corruption, abuse of power, and negligence on the part of individual police officers. There was also concern over undue police zeal in handling street demonstrations. During 1963 and 1964 a Royal Commission was held into alleged police protection of a call-girl service operating out of the National Hotel in Brisbane. The Commissioner, Justice Harry Gibbs did not find that such a service operated, but he did criticise the lax enforcement of the licensing laws due to friendships between hotel management and police. It seems likely that the inquiry was hampered by a cover-up, because in 1971 one of the key witnesses admitted to perjuring herself. State Treasurer Thomas Hiley established the extent of Bischof's gambling habit and confronted him. On 13 February 1969, only 240 days before his retirement, Bischof suddenly took leave on medical grounds. In December 1974 he was charged with stealing, but the Crown decided not to prosecute. Bischof died on 28 August 1979 in South Brisbane, and was survived by his wife.
Paedophilia allegations
Bischof operated clinics for difficult children at his office, which attempted to illustrate to potentially wayward children the error of their ways, during the 1950s–1960s. However, it was also a way for Bischof to have access to the hundreds of young children who did. Margaret Fels, a housewife from Eight Mile Plains, had an affair with Bischof. Journalist Matthew Condon, in his book Jacks and Jokers, reported that two of her sons alleged that Bischof had sexually assaulted them, and they believed that he may have also assaulted a third, deceased, sibling.
