Who killed Osgood Buckely-Lodge? His widow admits her actions killed her husband. But she says it was a trap and anyone who had stepped into the room that night would have been the murderer. Is she telling the truth or setting yet another clever trap? Perhaps the murderer is Osgood's eccentric sister, Olga, or the spoiled, lazy children, Simon and Jasmin. Then there's still the eerie butler and his sarcastic wife. To add more confusion, not one but two mysterious strangers in trench coats appear at the mansion during a thunderstorm. To catch the murderer among them, as well as find a missing will, three young detectives call upon their special abilities: Karen's brain, Darren's brawn, and Sharon's extra-sensory perception. Will they succeed before there's a second murder and an attempt on their own lives?