Murder on the Dancefloor

Now halfway through her globetrotting around the world trip, Patricia Fisher is feeling relaxed and happy on the arm of Captain Alistair Huntley.
The peace is soon interrupted though when another calling card is found. They have been turning up for weeks, proof that someone has been breaking into the upper deck suites, but nothing has been stolen and no crime appears to have been committed.
There's more going on though. The Aurelia is playing host to a live television event as India's biggest ever show, Stars that Dance come on board for the journey from Chennai to Mumbai.
There's a real party atmosphere until the first body is found. It's one of the dancers and there's yet another calling card impaled on the knife through her chest.
In true whodunnit style, Patricia is going to have to solve the crime, catch the killer and work out how the calling cards are connected.
It's just another day on board the Aurelia.