Twelve hours after leaving the theatre, I can't get the piece out of my head. Its mixture of the whimsical and the shocking, windy Welsh garrulousness and sudden moments of intense feeling, is undoubtedly distinctive. There may be more than a touch of Dylan Thomas's Under Milk Wood in the play's more poetic passages, with stories of mermen and villages under the sea, but it is also a piercing account of sisterly love and the agonies of Alzheimer's . . . It captures both the horrors of old age and the ties of family love with unmistakable compassion.