Original: On the night of 9 and 10 August Pottinger and a party of police surrounded the house of Gardiner 's mistress , Kate Brown , but the bushranger escaped when Pottinger 's pistol misfired .
Simplified: On the night August 9 , Pottinger and a group of police surrounded the house of Gardiner 's mistress , Kate Brown . The bushranger escaped when Pottinger 's pistol fired accidentally .