My first book of the New Year happened to be Simon R. Green's Murder in the Dark, the latest in his Ishmael Jones series, which as we found out recently is not part of his Drrod/Nightside universe, even if Black Heir is still present.
The major premise has to do with the Organization sending Penny and Ishmael to a site outside of Bath, where a hole has opened up. But not a normal hole. No, this one has razor sharp edges, no bottom, and doesn't actually have dimensions, as the scientists on site actually dug a tunnel under it that never intersected the hole.
As this is Ishmael, not long after they get there, people start winding up dead, cell phones have no signal, and Penny's car won't start. Despite the big interdimensional hole, we can be pretty sure something quite human is busy killing off the scientific team.
For such a short volume, it does contain a lot of stuff, including more clues into Ishmael's origins. On the other hand, the resolution to the mystery, while making sense also seems rather... unlikely. While the motive rings true, it really wouldn't play well in the real world, where less lethal methods that are just as vicious show up.