Andrea Roth has joined the cast of Lost, according to TV Guide.

Roth -- aka Denis Leary's long-suffering spouse on Rescue Me -- will appear in a recurring role.

Details about her character are being kept under wraps, but the site reports that a recent Lost casting notice went out for a female character in her mid 30s described as "a tough, no-nonsense and beautiful" therapist who has a tendency to be "overly controlling and obsessive."

It is anticipated that Roth will continue to appear in Rescue Me.

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