Torchwood: The Office Of Never Was

The basic premise here is that Ianto is trapped in an abandoned and apparently haunted office block somewhere in Cardiff. As one would expect for a story featuring Ianto it is, at least at first, about an ordinary person stuck in an impossible situation and does, indeed, feel quite like a ghost story. The opening segments are rather slow, with Ianto necessarily spending a lot of time talking to himself as he tries to figure out a way to escape from the building.

But things do build, and other characters turn up. That only deepens the mystery as it's clear that something very strange is going on, but that it probably isn't what it appears to be. This turns out to be a creepy slow build towards the revelation of what's actually happening, which makes really good use of Torchwood lore to build a plot around themes of taking responsibility and of just how moral some of what the organisation does really is.

It's unexpectedly dark, given who the central character is, but the slow start pays off - even if the ending is far from comfortable.