A Vacation to Die For

Large print for those whose eyes are as bad as mine
Tammy Sheridan, a Valley Girl, like, you know, those in the eighties, won a vacation to die for in a contest. First stop was Cancun, second stop, Managua, third stop, Bocas del Toro, forth stop, Cartagena, fifth stop, Rio de Janiero.
She didn't make the fourth stop.
Tammy was considered a little weird, but was liked. No one had any reason to kill her.
Somebody did.