Drew Herdman: 2 books

Yes, it is possible to die twice. A hologram created to do good after its inventor's death turns paranoid about its existence and goes on a rampage of terror. Can it be stopped before it causes a nuclear disaster? Many twists, lies and deceit in high places, an exhumation and several lurid deaths...

Rhes is looking for a new home earth for his dying planet. Crashing here he is saved by the twins Robin and Robina. Promising to help them in return if trouble comes. It does, and he is only just able to beat the evil Rex and his gang after many adventures, with the help of all his special equipment....