The drama will end its run far earlier than expected.
The Emmy winners join the rotating ensemble cast in A.R. Gurney's two-character drama.
The production has changed its rush policy.
Playhouse trustee and former Chairman of the United States Securities and Exchange Commission Arthur Levitt was also recognized.
The play will feature a rotating cast including Brian Dennehy, Mia Farrow, Carol Burnett, and more.
Diana Rigg and Mia Farrow will also take part in the drama's first-ever revival.
The as-yet-unnamed Cold War spy thriller is based on the true story of CIA agent James Donovan.