Becalmed forever in the spangled darkness of space, Sector General, the vast hospital comlex created to serve the known – and unknown – worlds, spreads its healing influence across half a galaxy. But for O’Mara the hospital chief and his dedicated crew, part human and part alien, that is not enough – so…Ambulance Ship, a craft in every way as extraordinary as the institution it serves, is designed to seek out and succour the physically or mentally distressed, wherever they are and whatever their species. The human doctor, Conway is the senior medical officer, the insect telepath Prilicla is on his staff, as are the glamorous Nurse Murchison and the Kelgian Naydrad.  Together they face ordeals literally out of this world.