“Zebras?” I raised my eyebrows.
She sniggered. “Yes. Haven’t you heard that saying?”
I shook my head.
“Dr Theodore Woodward. When you hear hoofbeats, think horses not zebras.”
“What’s that supposed to mean?”
“Well, in this context, the most common explanation is likely to be the right one.”
“So that wailing probably isn’t a ghost?” I was disappointed, in a way.
“No, Chris, I think you’ll find it’s the boiler on the blink again.”