The week in theatre: The Welkin; Krapp's Last Tape/ Eh Joe/ The Old Tune; The Sunset Limited " review
Lyttelton; Jermyn Street; Boulevard, LondonA pregnant question hangs over Lucy Kirkwood's elegant new courthouse drama, while a superlative Beckett triple bill could teach Cormac McCarthy a thing or two There is much to admire in Lucy Kirkwood's new play, The Welkin, set in 18th-century Suffolk. It is filled with shocks of the best and worst sort, light and dark entertainment. Director James Macdonald, designer Bunny…