They spent seven months planning everything from the method of abduction to disposal of the body. To obfuscate the precise nature of their crime and their motive, they decided to make a ransom demand, and devised an intricate plan for collecting it, involving a long series of complex delivery instructions to be communicated, one set at a time, by phone. They typed the final set of instructions involving the actual money drop in the form of a ransom note, using the typewriter stolen from the fraternity house.