His Revenge by C.J. Willis

As a mafia heir, Leo has one goal and a promise to keep. His arranged marriage to the enemy’s daughter is just a means to an end. Between his technically savvy best friend and loveable secret sister, Leo may not have room in his heart for anyone else. His beautiful betrothed is far more than he ever expected, with beauty and brains. She may be the daughter of his enemy, but the enemy of your enemy is your friend. Will she be a thorn in his side or his secret weapon?
As a mafia princess, Ella has spent her whole life knowing that she would have an arranged marriage, but she never expected to marry the enemy’s son. When her past starts to unravel, some of her biggest secrets are brought to light. Her scars are on full display whether she wants them to be or not. She has to figure out who are her enemies and who are her friends. Will she transfer from one cage to another or is this her opportunity for freedom?
Outside forces are trying to take them out and stop the impending joining of families. Enemies wear the faces of friends and family. Will they work to get the revenge he promised to her father or will his world and future crumble because of his decisions?