Immaculate
"Nothing?" Professor Walsh looked at her cheif assistant, "Nothing at all."
"She's like nothing we've ever encountered before: she looks perfectly human on the out side, right down to breathing and a pulse." The scientist nodded, handing over a thick folder, "But MRI, X-ray, ultrasound, no test I know of can record anything. It's like she's there, but she isn't."
"Anything like her on record?"
"Nothing. And she seems to upset the rest of the test subjects."
"Upset?"
"They don't like being near her."
"We need to find out what she is, and if we can harness this effect to our own ends. Prep operating theatre two."
TBC...