Dresden Files 10 Small Favor

Description:

One quiet year after the events of White Night, Harry is at the Carpenter home teaching Molly, his apprentice, to create shields while he and Molly's siblings throw snowballs at her, when they are attacked by gruffs, enforcers of the Summer court of faeries. While Harry is pondering why he would be attacked by Summer, an ally, Sergeant Murphy, calls him in on a case in which a building was almost totally destroyed by chaotic magic. He calls upon Toot-toot and the other fairies in the "'Za-Lord's Guard," but when Toot-toot returns, terrified, he urges Harry to run.
Ducking into an alley, Mab appears to Harry, though she can apparently only speak through Grimalkin. She propositions him again to become Winter's Knight, but he declines. She calls in one of the two favors that Harry still owes her, demanding that he be her Emissary. She shows him that the building he was investigating contained a panic room belonging to John Marcone, Chicago's greatest crime boss and long-time nemesis and wary ally of Harry's, and she tells him that he must protect Marcone or die. Harry protests that one of the conditions of their agreement was that he could chose to accept or refuse any of the favors she requested. Mab partially freezes the water in Harry's body, angrily declaring that he should not "question her given word."
However, Mab was not what Toot-toot was warning Harry about. Three gruffs, even bigger and meaner than the first ones, are pursuing him. He eventually escapes and is picked up by his half-brother Thomas, the White Court vampire. As they sit in Thomas's large SUV, Fix - a friend of Harry's and the Summer Knight's - comes up and points a shotgun at Harry's head, warning him not to take Mab's deal. Thomas pulls a gun on Fix, and Harry gets them both to lower their guns only to point Thomas's gun at Fix himself. Fix hints that he is being compelled, as fairies are forced to obey the letter of their orders, and tells Harry to "Remember the leaf Lily gave you". The leaf represents a boon owed to Harry by the Summer Court, and he soon realizes that this trinket has been what the gruffs have used to track him.
He goes home and works up a spell to link the leaf to his "Little Chicago" magical mock up of the city. Dangling it on a string with a pouch of catnip gets his cat Mister to bat it all over the city, leading the agents of Summer on a merry chase and buying Harry time.
Harry and Thomas go to Executive Priority, Marcone's exclusive fitness center/brothel, to which Marcone had given Harry a VIP membership. He asks to speak to Ms. Demeter, one of Marcone's lieutenants, but is told that she is not in until he has Thomas start displaying his strength to make the point that the two of them can wreck things pretty badly if they're not passed up the line. Harry gets in to meet Demeter, who is uncooperative. Another of Marcone's lieutenants, Torelli, brings along some goons to muscle Demeter out, but Harry and Thomas handle him and in exchange Demeter directs them to the safe house where Hendricks and Gard, who were with Marcone when he was taken, are hiding.
Harry and Thomas head over there, where eventually Harry is allowed to go upstairs to speak with Miss Gard, who is "a mess of blood". Their conversation is interrupted when the house is attacked by some of the Denarians. Harry parleys with one, whom he dubs Mantis Girl. She insists that this is a private affair between the Denarians and Marcone, who are both now signatories to the Unseelie Accords, and asks Dresden to stay out of it saying that if he does no harm will come to him. Harry counters by offering to let them leave town in one piece if they give back Marcone. Mantis Girl pretends to leave to consult with her partners, but immediately comes back to attack. Harry, expecting it, fends her off and he, Thomas, Hendricks, and Gard escape together.
Suspecting that St. Mary of the Angels church will be watched, Harry takes Marcone's henchmen to the Carpente