Home of the fictional character Thomas Sullivan Magnum (Tom Selleck), who resides in the guest house of a posh, 200-acre (0.81 km2) beachfront estate, known as Robin's Nest, in Hawaii, at the invitation of its owner, Robin Masters, the celebrated-but-never-seen author of several dozen lurid novels.
http://en.wikipedia.org/wiki/Magnum,_P.I.