King, Come At Red Morning
Bilbo has heard fairytales of the lost prince of the dwarves, Thorin son of Thrain, who disappeared the day Smaug attacked the Lonely Mountain. But he does not believe in fairytales until he comes across the dwarf sleeping in the depths of Erebor, and kisses him back to life.
Now Thorin - a hundred and fifty years out of his time - has to confront a world in which his city is empty, his people scattered, his baby brother Frerin is king, two nephews he's never met are missing in action, and a war is brewing right on his doorstep.
And as if that wasn't complicated enough he's trapped in the body of an old man and falling stupidly in love with a gossipy, grudging little hobbit.