Bloodline Novel By Sidney Sheldon. Bloodline is a 1977 novel by American writer Sidney Sheldon. Sheldon’s sweeping saga of greed and betrayal, sabotage and danger, and the ties that can kill. Roffe and Sons is a family firm, an international empire filled with desperate, cash-hungry family members. At its head was one of the wealthiest men in the world, a man who has just died in a mysterious and left his only daughter, Elizabeth, in control of the company. Now as this intelligent, tough, and beautiful young woman dares to save not sell Roffe and Sons, she will have to outwit those who secretly want her power, and the unknown assassin who wants her life.