I think there's no day 4 part 19. Comparing the series to the one on www.learnvisualstudio.net the only difference is the last video. On that site it is called "Day 4 Wrap Up, Next Tasks" (2m,43s); on Ch9 it is called "Where to go from here" (6m,56s). All other 63 video's are the same. So you can safely say the series is complete. The numbering of the last video on Ch9 is misleading.