Two for the Money by Steve Zettler

What happens when millions in cold cash evaporates into thin air? And the only people aware of its disappearance are a collection of misfits, bunglers and crooked CIA agents? The one person on earth who knows exactly where that cash is located is a legless, ex-Navy SEAL, confined to a wheelchair.
It’s an icy Christmas Day in Philadelphia, City of Brotherly Love. Sam Christie has come to South Philly to visit the grave of a former Secret Service Agent, Pete Macaluso. Drive into town, place some flowers on Pete’s grave, and head home – piece of cake…
Not so fast; unbeknownst to Sam, he’s walking straight into a sinister trap; a trap that will take him to the exact spot where the Americas meet, and pit him against ruthless mercenaries, an unrelenting cop, and rogue CIA agents.
“It’s Panama, Sam… There are no rules.”