Antonio (Tony) and Valentino (Tino) Bertelli are twin brothers that had always dreamed of becoming detectives. They grew up in a cozy, safe, family home with a loving mother and an amazing father that was part of the NYPD. They had a seemingly perfect life with a promising future. Now as adults Tony has a beautiful girlfriend who is the love of his life, while Tino is focusing on his career and staying single. Both of them are handsome, charming, and intelligent. On top of everything they have going for them, they are going to open up their detective buisness so they can have their dream job. On the darker side of their lives, the Bertelli brothers also had a triplet sister, Tatiana (Tia) Bertelli who was young, beautiful and working hard toward her own career dealing in computers and electronics. Then one tragic morning, the Bertelli family woke up to Tia being gone without a trace besides the note that was left behind by her kidnapper. At the time she was only 15 years old. The Bertelli brothers had worked hard to try to find their sister. Now 10 years later Tia's case had still never been solved. The day the Bertelli brothers go to open their business, a shocking, unexpected, murder happens. More mysterious notes are left behind, leading them to investigate to desperately try to find their sister. Along their journey, they will have to deal with the Mafia, deceit, threats, and even the possible loss of the ones that they love as they put everything on the line to find Tia. Bertelli Investigations is a crime series that is a mix of being a thriller, a detective story, and a heart touching book.