Out of the rain

Out of the Rain makes a delightful match of two unlikely lovers: Estelle Denby, the easygoing, widowed mother of three small children, and Edward Netherford, a wonderfully appealing but utterly routinized London lawyer. Beset by clients whose stepmother has disappeared with some valuable paintings, Edward grudgingly leaves London to pursue the culprit. the chase brings him on a rainy night to Estelle's country house, where he settles in among the cheerful disorder, hoping to find the missing artwork, only to be inexorably caught up in a far more satisfying drama - and a fine romance.
(https://books.google.dk/books/about/Out_of_the_Rain.html?id=oCxmAAAACAAJ&redir_esc=y)