The series' third season opens with a report on sightings of a bright orange fireball that crashed in Pennsylvania and was reportedly removed under military supervision; a woman's first meeting with her biological father; an arsonist's home movies.

""Mysteries of Alien Beings"" reports on four men who say they were abducted by aliens while on a fishing trip in Maine, and includes research by psychiatrist John Mack. Also: a physicist's claim that he worked on a captured extraterrestrial spacecraft at a top-secret U.S. Air Force testing center. (Repeat)

• Wanted: Jerry Strickland & Missy Munday • Final Appeal: Michael Martin • Unexplained Death: Kurt McFall • Lost Loves: Undelivered WWII Letters

• Amnesia: Doreen Picard • Fraud: Louis Carlucci • Wanted: Diane Brodbeck & Jon Yount • Treasure: Beale's Treasure

• Wanted: Dave Davis • Updates: "Lost Heirs: George Marsh" • Unexplained Death: Aileen Conway • Mysterious Legends: Glen & Bessie Hyde • Missing Persons: Dottie Caylor

• The Unexplained: The Queen Mary • Wanted: Joe Shepherd • Missing Persons: Gail DeLano

• Mysterious Legends: D.B. Cooper • Update: "Wanted: Diane Brodbeck & Jon Yount" • Unexplained Death: Don Henry & Kevin Ives • Fraud: Dennis Walker

• Unexplained Death: Son of Sam • Lost Heirs: Walter Green • Unexplained Death: Harold & Thelma Swain • Updates: "Wanted: Jerry Strickland & Missy Munday"

• The Unexplained: The General Wayne Inn • Murder: Gretchen Burford • Unexplained Death: Son of Sam • Missing Persons: Annie Hearin

• Missing Persons: Christi Nichols • Solved: "Missing Persons: Gail Delano" • Wanted: Mark Adams • Fraud: Steven Cox • Unexplained Death: Barbara Jean Horn

• Unexplained Death: Kurt Sova • Lost Loves: Melvin & Daniel Nellis • Unexplained Death: Father Reynaldo Rivera & Father John Kerrigan • The Unexplained: Mystery Rock

• Wanted: Ann Sigmin & Gary Goff • Updates: "Unexplained Death: Don Henry & Kevin Ives" • The Unexplained; Robert Matthews & Kristina Florence • Missing Persons: Rogest Cain

• Amnesia: Jenny Pratt • Solved: "Wanted: Joe Shepherd" • Fraud: Jack Quinn • Unexplained Death: Clarence Roberts • Wanted: Fumbles

• Lost Loves: Philip Pelletier • Missing Persons: Matthew Chase • Unexplained Death: Marilu Geri • Lost Loves: Dolores Valadez

• Murder: Lee Selwyn • Solved: "Fraud: Steven Cox" • Missing Persons: Michael Rosenblum • Updates: "Missing Persons: Rogest Cain" • Fraud: Arthur Frankford

• Missing Persons: Jeremy Bright • Unexplained Death: John Martin • Lost Heirs: Dan Willans • Wanted: Leo Koury • Wanted: Michaela Garecht • The Unexplained: Tatum House

• Wanted: Micki Jo West • Solved: "Waned: Dave Davis" • Lost Loves: Sylvia Wemhoff & Margaret Murphy • The Unexplained: Dorothy Allison

• Unexplained Death: Lester Garnier • Updates: "Fraud: Arthur Frankford" • Unexplained Death: Kathy Hobbs • Solved: "Lost Loves: Philip Pelletier" • Lost Loves: Jackie Purintan • Missing Persons: Angelo Desideri

• Special: Alcatraz Escape

• Unexplained Death: Mickey & Trudy Thompson • Wanted: Michael Mohon • Mysterious Legends: Bigfoot in Colorado • Lost Heirs: George J. Stein • Unexplained Death: Joyce McLain

• Wanted: The Burrowing Bandits • The Unexplained: Near Death Experiences (Kristle Merzlock & Thomas "Tom" Sawyer) • Updates: "Lost Heirs: Dan Willans" • Unexplained Death: Permon Gilbert

• Wanted: Donald Smith • Mysterious Legends: Billy the Kid and Brushy Bill Roberts • Updates: "Missing: Angelo Desideri" • Wanted: Charles Mule

• Unexplained Death: Lisa Marie Kimmell • Treasure: Lost Dutchman Mine • Missing Persons: Audrey Moate

• Wanted: John Mooney • Fraud: Liz Carmichael • Updates: "Missing Persons: Annie Hearin" • Unexplained Death: Terri McClure

• Unexplained Death: Gus Hoffman • Updates: "Missing Persons: Matthew Chase" • Mysterious Legends: Charles Nungesser & Francois Coli • Unexplained Death: Patsy Wright • Lost Loves: The Families of the S.S. Muskogee Crew