19 Caskett's Batman and Beckett Halloween Story » At Castle's Halloween party, he's costumed as Batman and Beckett as Talia al Ghul. So, will they or won't they use Frank Sinatra's 'Witchcraft' and some of 'That Old Black Magic' to make Caskett come together to make a 'Nice 'n' Easy' future for Castle and Beckett? I own nothing related to Castle, Batman:Arkham City or the songs of Frank Sinatra. No infringement of copyright meant.