Joe Joyce has completed his "Echoland" trilogy of historical thrillers with Echowave, now out as an ebook and available in December as a paperback.
June 1941. An American plane crashes in neutral Ireland.Its cargo of booze, cigarettes and caviar destined for the US embassy in London includes a piece of secret military hardware of great interest to the Germans.
The device disappears from the wreckage. Young Irish military intelligence officer Paul Duggan is on a secret mission to Lisbon to find it before the Germans do.
Meanwhile, the US and British are pushing the Irish government to help protect their Atlantic convoys, which would involve it in the war.