Mrs Battersby said the thought of someone being in the house while they slept, just one room away from Brogan – whose room has to be on the ground floor – didn’t bear thinking about. “I went up to bed at around midnight,” she said. “I locked all the doors up and took the key out and put it on the side. “In the morning I didn’t notice anything was gone at first. I then realised my keys weren’t there. I asked my daughter if she had them, and she said the door had been open when she got in [at around 4am].