Necessary Evil

This was a good conclusion to the trilogy. After the barnstorming end of the previous book, this did a good job of keeping the story moving and tying up most of the loose ends. I am willing to overlook one or two plotlines that were just a little too convenient (the physical state of Marsh The Elder at the end of the second book proves to be surprisingly useful in the final book) and there is one glaring loose end at the end the trilogy (I thought they were trying to destroy all of the evidence...?). Overall, this is one of the better trilogies I have read recently.

Ce troisième et dernier tome de la trilogie de Ian Tregillis se lit avec plaisir. Il est bien construit et clôt parfaitement cette histoire alternative de la Seconde Guerre Mondiale.

Great book and series.

Necessary Evil completes Ian Tregillis's alternate-history trilogy (or triptych, as he calls it). The three books together form a tale of adventure, of unspeakable evil, of supernatural powers, and of heroism.
It is a good tale, well told.

A satisfying end to an excellent trilogy. It's really interesting the idea of time travel plays out to give all three books a cohesive thread.

I've been thinking about this books ending and I have to give it to Ian Tregillis for not going for the easy out. I was expecting a different ending entirely. But, by going for a messy ending I thought he made the story more compelling. I'm sorry to see these characters and story end.