I have just found this show and enjoyed it BUT as a hard of hearing viewer who relies on subtitles I have been very disappointed that the final series has NONE. Why is this???? A lot of the important scenes are lost to mumbled dialogue. If you are not providing subtitles you should have the scenes listened to and if found lacking have them rerun or dubbed. Oh series 4 did not have subtitles either. Please think of all viewers and make all scenes inclusive!