Six of Crows.

Six of Crows is a fantasy heist novel by Leigh Bardugo. It was first published in 2015 as a standalone novel, but it is now considered to be the first book in the Six of Crows duology, followed by Crooked Kingdom.
The novel is set in the Grishaverse, a fantasy world that Bardugo created. The Grishaverse is a world of magic and power, where people with magical abilities are known as Grisha. The novel follows six outcasts who are brought together by a mysterious heist: Kaz Brekker, a cunning thief; Inej Ghafa, a skilled acrobat; Jesper Fahey, a sharpshooter with a gambling problem; Nina Zenik, a Heartrender with a powerful secret; Matthias Helvar, a Fjerdan druskelle with a heart of gold; and Wylan Van Eck, a runaway with a gift for alchemy.
Together, the six outcasts must embark on a dangerous mission to steal an impossible object: a legendary jurda parem, said to be able to amplify Grisha powers. But the journey is fraught with peril, and the six outcasts must overcome their differences and learn to trust each other if they are to survive.
Six of Crows is a fast-paced, action-packed, and suspenseful novel that will keep readers on the edge of their seats. It is a story of friendship, betrayal, and redemption, and it will leave readers wanting more.