Don't ever get old

"Buck Schatz in an eighty-seven-year-old retired Memphis cop with a know-it-all plugged-in grandson for a sidekick. When Buck learns that an old adversary may have escaped from Germany with a fortune in stolen gold, he decodes to hunt down the fugitive and claim the loot. But a lot of people want a piece of that stolen treasure, and Buck's investigation quickly attracts unfriendly attention from a Mississippi loan shark, a seven-foot-tall Hasidic...