Katy Gavin
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Kathleen "Katy" Marie Gavin is a fictional character on the FX drama Rescue Me. The character is played by Olivia Crocicchia.
Katy is Tommy and Janet's youngest daughter. Like her siblings her love is usually for sale depending on which parent pays the most. After the death of her brother Connor, Katy was for a brief time withdrawn and existential. Her dark outlook on life and lack of belief in God scared Sean Garrity.