Erimem - The Way of the Bry'Hunee paperback

Erimem and her friends board the liner Agamemnon for a Mediterranean cruise in 1934.
 
The other passengers all carry secrets and grudges, and very soon the first murder aboard ship is reported.
 
Erimem and her friends must discover the identity of the killer and save everyone aboard the Agamemnon.
 
Another adventure for Erimem, former companion of the Fifth DOCTOR WHO. She is a pharaoh, an adventurer, a time traveller and a bit of a chocaholic on the side. Her travels take Erimem to the furthest reaches of time and space, usually dropping her (along with her friends) into terrible danger.