A murder has taken place, committed by a member of a species that lives in the opposite direction to the timeline, who, from its own perspective, has not yet committed the crime in question. It’s locked house murder mystery where the culprit is clear from the beginning, but the process is anything but. The Doctor lands smack bang in the middle of it all.
It’s an interesting enough story with paradox’s and murder mysteries. I think the best highlight for me was that it was a story where Ten is trying to make a go of traveling alone before acknowledging he really should have someone with him by the end.
