He'd taken the knickers from Kate's bedroom floor as he snuck out of bed, eager to be gone before she awoke. Walking home, he rubbed the silky material in his pocket.
He lost count of the times he'd feverishly pleasured himself with her knickers over the next week. Funny she'd not called or texted.
Then he read the local newspaper.
The girl, named as Kate Robertson, 19, was found by her parents in her bed at home. It is believed she died from alcohol poisoning. Police are eager to speak to a man seen with Kate the night she died.