Lisa Hallet. He didn’t recognise the name.
Of course, there’d been plenty of Torchwood girls and boys over the years--his
self-designated treat for going to London and briefing Torchwood One.
By the time he saw her face again, she was nothing but the same kind of
monster who’d killed Rose Tyler and the fact that it had once been a human
being meant nothing to him.
He put the pieces together much later, but it wouldn't have changed anything if he’d remembered shagging her sooner. He would have killed her, regardless.
Just one more thing not to tell Ianto.