Steven Carruthers is an Australian author and researcher of naval and maritime history. Ghost Below: The Lost Submarine of Sydney Harbour reconstructs the 1942 midget-submarine attack and the decades-long search for the missing M24, drawing on Japanese and Australian archives, official inquiries, and interviews with divers, sailors, and historians. Carruthers has written on Australia's home-front war and coastal defense, including A Parting Shot. His work blends narrative storytelling with careful documentation, making complex history accessible to general readers, divers, and maritime enthusiasts. He lives in Australia.