Earlier this summer, Platt and Katie Brayben starred in ''A Walk on the Moon,'' which tried out at A.C.T. in San Francisco.
It's a new musical based on the 1999 movie of the same name, starring Diane Lane, Liev Schreiber and Viggo Mortensen.
It's about an unfulfilled housewife who has a fling with a traveling stranger (while her husband is away). And if that's reminiscent of ''The Bridges of Madison County,'' it is. The S.F. Chronicle critic called ''A Walk on the Moon'' ''airless,'' except for a brief moment in Act II where ''voices truly lift off.''
