Linda's frustration with her inability to achieve orgasm causes a friend to recommend that she see a sex therapist about her problem. During the exam the therapist discovers that Linda's clitoris is located in her throat and recommends deep throating as a treatment to her ailment. Linda then goes on to experiment with this new technique as she searches for a husband.

Nurse Linda Lovelace works for libidinous sex therapist Dr. Jayson. One of the patients she is treating is Dilbert Lamb, a meek geek who's harboring plans for a top secret government computer. Both the KGB and FBI alike attempt to enlist Lovelace in order to obtain the data on the computer.

The third Deep Throat film.

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The fifth part of the series