Season 4

Chris tries to unravel a legal mystery involving a woman's sister who she last saw across a New York courtroom 30 years ago.

A Vietnam vet hopes Lisa can hep him make amends for the past by locating the daughter he lost custody of 40 years ago; and a woman's struggle to fit in takes a surprising turn when Chris reveals a series of stunning coincidences very close to home.

The recent revelation of a 49-year-old man's adoption sends Chris searching for answers to a secret his adoptive parents took to the grave; a biracial woman enlists Lisa's help to find her birth family, revealing some unfortunate tragedies.

Lisa faces many challenges when she helps a woman locate her father -- starting with his identity;a woman seeks Chris' help to find her mother, hoping the similarities she read in her adoption paperwork are not just a fantasy.

Chris aids a woman's search for her father after she was shuffled through 28 foster homes; two radically different sisters, adopted into the same family, seek Lisa's help to search for their biological mother.

Lisa helps a man yearning to discover his biological roots, but fearful of rejection from the family he has never met; and Chris reveals the truth to a woman who has felt guilty that her birth might have devastated the life of her 14-year-old mom.

A Texas lawman seeks Lisa's help to tackle the investigation of his birth and adoption.

After learning of her own adoption at a late age, Chris aids a woman determined to unlock the mystery behind her birth story; a desperate mother enlists Lisa's help to locate her first-born son, hoping to reunite him with his full-blooded siblings.

Long Lost Family sees a dramatic turn of events as Chris and Lisa investigate two seemingly different cases. A chance discovery raises the tantalizing prospect that the mother and son they're helping may be looking for one another.