|Portrayed by||Helen Wassell (in the tape in Depraved Heart)|
|Age||46 at death|
|Family|| Cal Lightman (son)
Emily Lightman (granddaughter)
|First Seen||Depraved Heart (tape)|
|Last Seen||Funhouse (hallucination)|
Not much is known about Louise's life. However, we know that when Cal was a child, Louise was in a mental hospital for an unknown disorder. After convincing Doctors of the hospital that she was well enough for a weekend pass to see her children and husband, she commited suicide. We also know that her husband was an alcoholic.
In Lie to MeEdit
Louise, while never formally appearing on the show, is mentioned several times and is a core part of her son's storyline. She first "appears" in the episode Depraved Heart, as Cal is watching the tape of her made just before her suicide. After this, she is mentioned at several points in the series, finally culminating in the episode Funhouse, where Cal hallucinates her and her husband.