In 1978, Chris Farmer and Peta Frampton travel through Central America, sending tapes and letters home with details of their journey; after a chance meeting with an American skipper and his sons, they change their plans.

Chris and Peta's bodies are found floating off the coast of Guatemala; the killer is on the loose and a key witness fights to be heard.

With the suspected killer in custody, Prosecution and Defense prepare for a courtroom battle that hinges on the credibility of the key witness.