Welcome back to another series of Are You Sitting Comfortably, dearest readers.  Our guest author for February is the fabulous Alex Hay.  Those of you who’ve been following AYSC for a while, will know that Rebecca L and I were huge fans of Alex’s first book, The Housekeepers, which is a brilliant historical heist novel with an all-star cast – a black-market queen out to settle her scores, an actress desperate…