Date: 1987 — used only — Book
Vicki Bliss is back (after two more adventures that I haven't actually read) and trying to determine the location of the famous Trojan Gold, long thought lost in the fall of Berlin. But Vicki has received a photograph in the mail of another woman wearing the gold - a woman who is dressed in post-WW II fashion. And there's blood all over the envelope. So she attempts to enlist the help of the art thief "Sir John Smythe" in order to track it down.
Of course, upon arriving at the probable location, it turns out that she isn't the only one to receive a photograph - and the likelihood is that one of the others, colleagues all, actually killed to protect the location. And will kill again, unless she finds the treasure first...