Hidden agenda - Carol Smith

Devastated by the shocking news that an old school-friend, Suzy Palmer, faces execution in Louisiana for the murder of her children, London rabbi, Deborah Hirsch, enlists the aid of her former classmates in an attempt to get her off. She can't be anything but innocent; the Suzy they've known and loved all these years could never hurt a fly.

Aided by Miss Holbrook, Suzy's former art teacher, the friends unite to prove Suzy's innocence.
Back and forth across thirty years they slowly piece together what happened.
And even more shocking than Suzy's plight is the knowledge that one of their number has betrayed her.