If you’re familiar with the hilarious escapades of Credit Suisse’s own Keystone Kops, you might surmise that the bungling efforts to keep an eye on former wealth-management chief Iqbal Khan were something of a one-off, a misbegotten scheme hatched by people unskilled in the arts of surveillance. To recap: Khan, once a close protégé of and possible successor to CS CEO Tidjane Thiam, had a dispute over some trees with his boss’ wife. So Khan quit to go run UBS’ wealth-management arm. This did not sit well with CS, which hired some PIs to keep tabs on Khan and take pictures of anyone he was meeting with, less any of those ones turned out to be CS employees he was trying to flip. Unfortunately for the PIs and for CS, the former were not as good at concealing themselves as they might have liked to think, and Khan caught on, and there were temporary arrests, and an investigation, and a firing, obviously not of Thiam.