Simplicity of Disputed Assertions (Short Story)

The crew of The Occam's Razor, a deep space survey ship are scouting the far reaches of space for rare minerals. It's isolated and lonely, and the crew take comfort in who and what they can. After an airlock seemingly malfunctions, one of the crew is found dead. It looks like an accident, but when another crew member dies, appearing to have been strangled, Morag suspects a murderer is among them. But could it really be that simple?