Premise: Mission: Impossible . In the first season , the team is led by Dan Briggs , played by Steven Hill ; Jim Phelps , played by Peter Graves , takes charge for the remaining seasons . Steven Hill . His two better-known roles are district attorney Adam Schiff on the NBC television drama series Law & Order , whom he portrayed for 10 seasons ( 1990 -- 2000 ) , and Dan Briggs , the original team leader of the Impossible Missions Force on the CBS television series Mission : Impossible , whom he portrayed in the initial season of the show ( 1966 -- 67 ) .
Hypothesis: Steven Hill is in the first season of Mission: Impossible, then his role is played by Peter Graves in the second season.
Label: ENTAILMENT