Some day I had to investigate a production issue based on logs. My luck that all exception’s properties were logged, but there was a small vulnerability. Stack trace was missing. So my investigating was much longer than I expected. To show it to you, I have created a code sample. Take a look. Missing Stack Trace with throw ex Here is a code where is throw ex. public class CodePrunerExceptionThrower { public void ReThrowWithEx(){ try { Inner(); } catch(Exception ex) { throw ex; } } private void Inner() { Deep() } private void Deep() { Hell(); } private void Hell(){ throw new Exception(); } } What is wrong in that code?