'In the late 19th century, the world was full of mysteries to solve, creatures to discover and unconquered lands to explore... In this new title in the Sam Silverthorne series, Sam escapes from his heartless aunt's care and sets sail to find his father, Sir Arthur Silverthorne, the Queen's Ornithologist, who has failed to return from an expedition to find the prized Silver Bird of Paradise.' ((Publication summary)
'Sam sets off to the exotic isles of the Indian Ocean in search of a shell whose deadly venom could provide the antidote for all known toxin but one member of Sam’s expeditionary party has gone along for another reason - murder!'
Source: Publisher's blurb.