Andrew Price, a finger print expert tells the jury that Mairead Philpott's finger prints were found on a window frame of the house.
He said it was not possible to say how old the prints were and he came to the conclusion that Mrs Philpott had been either leaning through the window or climbing through it.
Following Derbyshire Fire Service's recommendations over having sprinklers in homes, here are the best ways to improve fire safety at home.
Speaking exclusively to ITV News, Dawn Bestwick said jail wasn't good enough for MIck Philpott and that "as a coward" he "deserved to die".
The events that eventually led to parents Mick and Mairead Philpott and friend Paul Mosley's conviction of manslaughter.