I've read the Shades of Magic trilogy and Vicious, and TILoALR is my favourite of the lot:
**The story idea is not explosive, deal with a devil, but the writing is sublime and I enjoyed reading this book very much.
**I loved both Henry and the darkness and I also enjoyed Addie as a character.
**It was a megatrip through history, time, and impossible.
I have deducted a star as in some chapters I thought the descriptions of things and events was just too much. With dual timelines (past/present), it can get incredibly annoying when in one timeline things start to sizzle and you're just thrown back into a different timeline, to description of a budding city or events of war... it's like a game of cat and mouse and not at all enjoyable.
I would definitely recommend people to read this book. Whilst the ending feels like a sort of victory in a sense, I couldn't help but think that all characters were going to enjoy what they were left with.

"March is such a fickle month. It is the seam between winter and spring- though seam suggests and even hem, and March is like a rough line of stitches sewn by an unsteady hand, swinging wildly between January gusts and June greens."