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The most important thing to know about Susanna Thompson (born January 27, 1958) is this: if there is a major cable network crime show franchise, she has probably guest-starred in it. Her list of credits includes, but is not limited to: ''Series/TheXFiles'', ''[[Series/LawAndOrderSpecialVictimsUnit Law And Order: SVU]]'', ''Series/ColdCase'', ''Series/WithoutATrace'', ''Film/Dragonfly2002'', ''Series/TheTwilightZone2002'', ''Series/{{CSI}}'', and ''Series/LALaw''.

She is also a ''Franchise/StarTrek'' veteran, and is one of only a handful of actors to have guest-starred in all three 24th-century ''Trek'' shows - ''Series/StarTrekTheNextGeneration'', ''Series/StarTrekDeepSpaceNine'' (as Lenara Kahn, a love interest of Dax and a participant in the first same-sex kiss in franchise history), and ''Series/StarTrekVoyager'' (as the Borg Queen, taking over for an unavailable Alice Krige).

Her most famous roles are Lt. Col. Hollis Mann on ''Series/{{NCIS}}'', the Borg Queen in ''Series/StarTrekVoyager'', Queen Rose Benjamin in ''Series/{{Kings}}'', Karen Sammler on ''Once and Again'', and Moira Queen in ''Series/{{Arrow}}''.

She has also received awards for her work on the San Francisco stage, including roles in ''A Shayna Maidel'' and ''Agnes of God''. And she happens to be very good at [[ActionGirl stage combat]].

She is married to Martin Katz, a professor at San Diego State University.