The Trouble With Old Lovers

Returning somewhat tipsy from a friend's wedding, Alice announces to her partner Tom that she has just bumped into Edward and Laura - whom she has subsequently invited to dinner. Edward is Alice's old flame and Laura and Tom had a brief pre-marital affair - four ex-lovers meeting after twenty years.....where's the harm?
To make matters more complicated, Edwards and Laura turn up with an unexpected guest - Mary - with whom Tom had a passionate affair with.

Will Tom's and Alice's seemingly secure marriage survive the seductive onslaught of Mary, who is determined to get Tom?