Jessica's vacation at a Caribbean resort is not solely for pleasure, but to investigate a friend's murder.

Attending a concert in Washington, D.C., Jessica gets involved with two East German defectors and a murder.

A colossal mix-up puts Jessica in jail as a suspect in a murder only she witnessed. British agent Hagarty returns.

Jessica's old friend, Michael Hagarty, persuades her to play a part in his scheme to free a fellow agent from captivity.

Michael Hagarty is involved in a case in Sicily which has many twists and turns including the Mafia.

Chance possession of a secret intelligence document lands Jessica in the center of an international web of intrigue and murder.

Agent Michael Hagarty is arrested for the murder of his estranged daughter's crooked fiancee.