A man accused of two murders near bus stops killed a French student after she refused his advances, a court was told.
Amelie Delagrange was one of two women killed
Levi Bellfield, 39, was accused of "massaging" his evidence and giving fictitious accounts during a clash with the prosecution at the Old Bailey.
Mr Bellfield, of west London, denies two counts of murder and two of attempted murder between 2001 and 2004.
The student, Amelie Delagrange, 22, and Marsha McDonnell, 19, were both killed by blows to the head, the court heard.
Miss Delagrange was struck as she crossed Twickenham Green, west London, at night after getting off at the wrong bus stop in August 2004.
'On the prowl'
Brian Altman, prosecuting, said to Mr Bellfield: "You were cruising inside a van without any obvious destination, trying to pick up women who took your fancy - young, preferably blonde, attractive and alone. Preying on the bus routes?"
Mr Bellfield answered: "No I was not" to each point. He denied he had been "on the prowl" and that it was him in a white Ford Courier van seen following Miss Delagrange.
Mr Altman accused Mr Bellfield of lying about another murder and attacks on three other women and at one point suggested he was a "coward" for trying to blame some of the attacks on his workers.
Mr Bellfield, a wheel clamper, hit back by saying he had been asked a trick question and telling the prosecutor: "I am not going to bite".
Mr Altman said Miss Delagrange was attacked during eight minutes.
He said: "You had overtaken Amelie who you had spotted. You slowed down and you sought to engage her, laying in wait for her.
Marsha McDonnell had been on a night out with friends
"Was the idea to get her into your van? As she crossed the green, you got out to see - having tooled up with a hammer or some such.
"But she would not engage you and in an outburst of sudden temper, you lashed out and hit her from behind.
"It was you and no one else but you who killed her? It was not enough to hit her once, you struck her again and possibly a third time?"
Mr Bellfield denied the claims and added: "The only thing I have done in these proceedings is to tell the truth."
Mr Altman continued: "Amelie rejected you and paid the price for that rejection."
However, Mr Bellfield said he had never met Miss Delagrange.
He denies murdering Miss Delagrange and gap-year student Marsha McDonnell, both of whom died after being hit on the head with a blunt object.
He also denies the attempted murder of Kate Sheedy, 18, and hairdresser Irma Dragoshi, 33, and the kidnap and false imprisonment of Anna-Maria Rennie, 17.