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Lily Flynn (played by Anita Gillette) is a secondary character on the CBS television program CSI: Crime Scene Investigation. She is the mother of CSI Catherine Willows (played by actress Marg Helgenberger) and grandmother to Lindsey Willows, Catherine's daughter. She only so far appear in three episodes: Weeping Willows, Kiss Kiss, Bye Bye and The Case of the Cross-Dressing Carp.