A decade later, Sibyl, now Lady Penrith, is travelling along a desolate moor when a crazed man stops her carriage and hands her a scrawled note. Believing the note to be from Mountford, Sibyl sets out to investigate, and with the help of her niece Coralie Urquhart she will uncover the long-hidden truth behind the murder and the horrible fate of Brandon Mountford
"Thou Art the Man" (1894) is a thrilling and fast-paced novel of murder and mystery. It is also, as Laurence Talairach-Vielmas discusses in her introduction to this edition, a fascinating look at the ways Braddon adapted late-Victorian theories of heredity, disease, and criminology into her fiction. This edition reprints the unabridged text of the 1895 "yellowback" edition, complete with a facsimile of its cover, and includes a new introduction and explanatory notes.