Testing Hypothesis

His hand flew to his agape mouth. His eyes were bulging from its socket. He scanned the empty living room like someone would attack him at any minute. 

He was shaking in fear and barely had time to think rationally when he heard his phone chirped over the thundering of his heart. 

With shaking hands, he pulled his phone out of his pocket and saw a message from Ellise. He dialed her number, mumbling to himself while he waits for the call to go through. And he heaved a loud sigh of relief when she answered the call.

"Ellise, we got a problem," he said, without any greetings. His voice was trembling. 

"What is it?" she answered in a steady tone but the sharpness of her voice didn't escape a panicking Luke.