I recently brought it on dvd passed couple of years ago I got one thur four on dvd i need the fifth and six finial season it about this fib agent who has a brother who's a math professor at collage whos also a math geniuses & his b brother who works for the fbi bring he brings him in to catch fib wanted criminals the brother solves their cases by using math it last long time then they left the ending as cliff hanger they cancelled it did any one watch this when it was on tv?