There is, according to the theory expounded in The Knack, quite a knack in the art of making it successfully with girls. And that about sums up the plot [from the play by Ann Jellicoe] of this offbeat production.
The expert exponent of the knack is played by Ray Brooks, and the immediate target is Rita Tushingham, a young girl just up from the country and hopefully setting off in search of the YWCA. The other two characters are both young men being instructed how to acquire the knack from the master. As Michael Crawford plays a schoolteacher, it is a neat trick to cut into schoolroom lessons with the same dialog as that used by Brooks to his two friends.
The four performances are exceptionally good. Tushingham’s wide-eyed innocence is just right, and she plays with her familiar charm. Brooks is superbly confident as the glamor boy with the knack, and Crawford and Donal Donnelly both hit the right mixture of eagerness and innocence.