Doctor Who: Nightmare of Eden

The Starliner Empress comes out of warp halfway through a scientific survey ship, The Hecate. The Doctor, Romana and K-9 try to separate the ships, but someone on board the Empress is smuggling the deadly addictive drug Vraxoin. Could it be something to do with Tryst's continuous event trasmuter - A machine that takes Laser - Crystal recordings of areas of other planets?