Very rewarding collection about Magnus Bane, filling some of the storyline gaps for both Mortal Instruments and Infernal Devices, like how Magnus originally met Camille and Raphael Santiago, his friendship's (or not so frienfly relations) to various Shadowhunter and Downworlders families and how he got mixep up in the war with Valentine.
My personal favorites of the collection were: What Really happened in Peru -because Duh!, What to Buy the Shadowhunter Who Has Everything (And Who You're Not Officially Dating Anyway) - Magnus pondering over Alec's birthday gift, The Last Stand of the New York Institute is where Valentine comes in and finally The Course of True Love (And First Dates) - hilarious disaster of Magnus' and Alec's first date, for this alone the book was worth every penny!