Night of the Assassin - Russell Blake

Night of the Assassin is a prequel to the Assassin series. This book is free for the kindle. Did you ever wonder how El Rey became the highest paid assassin in the world? I recommend you read King of Swords first though.

The King of Swords, known as El Rey, started out as a peasant boy. This book chronicles El Rey's growth into the assassin that even the most evil cartel bosses fear. Be prepared for violence, pain, and death. Don't expect any remorse though. Very highly recommended.