A disturbing link is made between Jessica Fletcher's (Dame Angela Lansbury's) family history and the death of a slave in the 1860s.A disturbing link is made between Jessica Fletcher's (Dame Angela Lansbury's) family history and the death of a slave in the 1860s.A disturbing link is made between Jessica Fletcher's (Dame Angela Lansbury's) family history and the death of a slave in the 1860s.