Unfortunately, I seem to have lost all my notes on this adventure! However, I'll try to reconstruct events based on my original notes...
The Musgraves and others begin packing up to leave, but Lord Musgrave uncovered a letter he had missed - there was a dig found by his "searcher" that may be interesting! He still needs to pack up, but he's sending the others ahead - on the Orient Express! After a day-trip to Munich, they board the Orient Express, en-route to Varna, Bulgaria.
The train was slightly delayed, departing at nearly 8pm. After meeting a number of the train's occupants, and causing a little trouble here and there, the Musgraves and friends settled in. Here and there, they cause glimpses of drama - tension between guests, and eventually, a murder! A man was thrown from the train!
There is a layover, and police question the group, but eventually give up. One of the guests, a Bulgarian named Küçük, seems very upset about a shipment of his, yelling at the conductor.
After some investigation, the party found a young Romanian boy; they freed him, and eventually smuggled him off the train. They had Küçük arrested for kidnapping, and additionally helped the American, James, find who killed his friend - a pair of mobsters!
A few days later, Mr. Musgrave joins them, and they continue on to the new dig.