The Lawyer and the Tramp by Soraya Naomi

Although part of the Chicago Syndicate world, The Lawyer and the Tramp is a complete standalone and can be enjoyed either with or without reading the rest of the series.
The Lawyer
Carmine Montesi is a killer disguised as a refined lawyer.He’s a loyal member of the notorious mafia – the Chicago Syndicate – and the boss just happens to be his brother.He has wealth, influence, and sinful looks and is rejected by no woman.Until the moment feisty Eva ruins his New Year’s Eve, when one heated encounter starts an illicit underworld game, placing them on opposite sides.
The Tramp
Eva Conley is an escort.She’s working to make the money she desperately needs to pay an outstanding debt. That is, until he gets her fired.He’s an ass.She’s the enemy.They hate each other from the first time they meet.Carmine’s only supposed to be her assignment.And Eva’s the one woman he isn’t allowed to fall for.Because neither of them can sleep with the enemy and make it out alive…