Rosemary and Rue, the first of Seanan McGuire's October Daye urban fantasy novels, starts off in a manner most uncharacteristic of the genre. Toby Daye, private investigator and half-fae changling, is tailing a fae lord suspected of kidnapping his brother's wife and daughter when she is caught and transformed into a koi. She spends the next 14 years swimming in a pond, her selfhood submerged in the limited mind of a fish.
Unlike many urban fantasy protagonists, Toby Daye doesn't always get away safely. That was the first thing that caught my attention and made me think this might be a cut above the masses of urban fantasy series on the market these days. Then there was the fact that rather than bouncing back ready to avenge her losses - years of her life, a relationship with a lover and a child who believe she abandoned them and want nothing to do with her, a sidhe mother who was slowly losing her mind when the transformation took place and is beyond reach by the time Toby breaks free of enchantment - she withdraws, repudiates everything of her former life, shows all the signs of PTSD you would expect from such an assault, such losses.
And then one of the Sidhe nobility, Evelyn Winters, also known as Evening Winterrose, Countess of Goldengreen someone Toby has known all her life, is murdered by cold iron, and her last act is to bind Toby with an ancient curse to stop at nothing to find her murderer.
The complexity of October Daye's world, encompassing faerie beings from multiple cultures, changelings, kingdoms anchored to the world but not wholly in it, and the politics of all these levels is fascinating, and watching Toby navigate all these realms - while still living in the world and dealing with jobs and rent and the human relationships severed when she was imprisoned in the body of a fish - is enough to engage the reader's interest. Add in the mystery of Evening's murder and the twists and turns of Toby's investigation, and you have a roaring good read.