In 1977, Birkenhead-born first-time producer Graham Williams took over one of the BBC’s most famous shows, Doctor Who. His turbulent three years in the role saw clashes with star Tom Baker, budgetary nightmares and catastrophic industrial action – but also the highest viewing figures the programme has ever achieved. Graham died in 1990, aged just 45, leaving behind a wife and three young children. In this intimate new film, Graham’s family, friends and colleagues look back on a life of darkness and light.

• Documentary