I agree with the recommendations for Pacific Heights, Silence of the Lambs, Seven and A Perfect Getaway.
I would highly recommend two films with Morgan Freeman as Alex Cross - Kiss The Girls and Along Came A Spider. Both excellent crime thrillers, with lots of twists and turns and plenty of suspense.
You may also want to look at the following
The Usual Suspects, A Lonely Place To Die, The Bourne Trilogy, Outbreak, The Negotiator, The River Wild