The events that have unfolded at Credit Suisse in recent weeks over the bank’s surveillance of former international wealth management head Iqbal Khan are scarcely believable. If lurid details about the bitter dispute between Khan and his boss Credit Suisse CEO Tidjane Thiam over garden reconstruction, tree planting and blocked views of Lake Zurich polluting their working relationship were not shocking enough, Credit Suisse’s decision to tail Khan, a street altercation, a criminal complaint made to the Zurich public prosecutor’s office, and the ensuing death of a Credit Suisse security staff beggar description.