A bruising weekend for Keir Starmer: Labour loses its stronghold Caerphilly seat to Plaid Cymru in a by-election and faces fallout from the mistaken release and chaotic recapture of a convicted sex offender.  Sam Coates and Anne McElvoy unpack what went wrong, as a damning report on the asylum system slams the Home Office.  Plus, Lucy Powell makes her debut as Labour’s new deputy leader Chancellor Rachel Reeves has left the country to try to push through a Gulf trade deal. Will she be successful?