In the 1840s, a young cowkeeper and his wife arrive in London, England, having walked from coastal Wales with their cattle. They hope to escape poverty, but instead they plunge deeper into it, and the family, ensconced in one of London's "black holes," remains mired there for generations. The Cowkeeper's Wish follows the couple's descendants in and out of slum housing, bleak workhouses and insane asylums, through tragic deaths, marital strife and...