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Detective Frank Castalano was a friend of Jack Bauer's who worked for the LAPD Tactical Squad.

Before Day 1 Edit

Castalano alerted Jack Bauer and CTU to the suspicious murder of Hugh Vetri. (Trojan Horse)

Day 1 Edit

When Kim Bauer first went missing on Day 1, Jack called Frank and asked him to keep an eye out for her on his end. ("12:00am-1:00am")

Background information and notes Edit

Live appearancesEdit

* — Voice only

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