Three Men and a Little Secret

Richard, Will and Scott were the best of friends from elementary until high school. After Graduation they took their senior trip to Mexico where something so happened that they swore never to tell anyone about. They remained close friends but never spoke of what happened in Mexico. Now 15 years later Scott has learned that his best friends have both been killed on the same night. Scott is convinced that the murders are linked to what happened 15 years earlier. He is also convinced that he will be next so he starts his own investigation. It all slowly unravels and we learn that 15 years ago the three friends got stranded in Mexico and they broke into the home of a Mexican family ad sot them all and stole their money and car to get back to America. We also learn that the murders weren't done by Mexicans seeking revenge, but it turns out that Richard and Will had slept together once and Richard was in love with Will but Will regretted the whole thing and never wanted to see Richard again. So Richard shot Will and went home and killed himself but since he left no note everyone assumed it was murder. And that's why you always leave a note.