MakeMKV maps all the episodes together in the Segment map. All the episodes are seperate files on the actual blu-ray disc.
I have backed up the discs and removed the *.m2ts files and uploaded it here:
https://drive.google.com/file/d/0BypG0S ... UzVUE/view
THE_MENTALIST_SEASON_1_DISC_1
Name: The Mentalist Season 1 (English)
Source file name: 00014.mpls
Duration: 4:23:18
Chapters count: 36
Size: 38.6 GB
Segment count: 6
Segment map: 14,15,16,17,18,19
File name: The_Mentalist_Season_1_t00.mkv
THE_MENTALIST_SEASON_1_DISC_2
Name: The Mentalist Season 1 (English)
Source file name: 00017.mpls
Duration: 4:18:39
Chapters count: 36
Size: 39.1 GB
Segment count: 6
Segment map: 10,12,14,15,16,17
File name: The_Mentalist_Season_1_t00.mkv
THE_MENTALIST_SEASON_1_DISC_3
Name: The Mentalist Season 1 (English)
Source file name: 00001.mpls
Duration: 4:19:36
Chapters count: 36
Size: 38.8 GB
Segment count: 6
Segment map: 14,15,16,17,18,19
File name: The_Mentalist_Season_1_t00.mkv
THE_MENTALIST_SEASON_1_DISC_4
Name: The Mentalist Season 1 (English)
Source file name: 00001.mpls
Duration: 3:37:51
Chapters count: 30
Size: 30.7 GB
Segment count: 5
Segment map: 14,15,16,17,18
File name: The_Mentalist_Season_1_t00.mkv