Harper Murtaugh is the second daughter and youngest child of Trish and Roger Murtaugh.
She is played by twins Madison & Mikayla in Lethal Weapon.
Biography 
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Harper was born in September 2015, around the same time her daddy, Roger, had a "minor" heart attack in the waiting room; making her about a two-years-old. She has an older brother named Roger "RJ" and an older sister named Riana.
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