A television documentary about Rachel McLean, the Oxford University student murdered by her boyfriend in 1991, is to be screened on ITV1 on Monday.
New Zealander John Tanner walked free from prison last August after serving 12 years of a life sentence for strangling the 19-year-old St Hilda's College English student and hiding her body under the floorboards of her east Oxford home.
The programme, Real Crime: I Love You To Death, features interviews with Tanner's friends, journalists, police and witnesses.
It explores the couple's nine-month relationship, Tanner's obsessive behaviour and his coolness in the face of questions over Rachel's disappearance.
Tanner, a classics student at Nottingham University, had grown resentful of her life in Oxford, and killed her in a fit of jealous rage.
In the high profile police hunt which followed, he appealed for information at press conferences and took part in a reconstruction of the last time he claimed to have seen Rachel walk off with a mystery man at Oxford railway station.
He helped police create a photo-fit. But his story unravelled when witnesses came forward.
Rachel's body was discovered, 18 days after she went missing, in the house she shared with three other students in Argyle Street.
Tanner was 22 when he was convicted of murder at Birmingham Crown Court in December 1991.
He has started a new life in New Zealand. The documentary is at 11pm.
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