guideline:

For each aforementioned savegame, you just have to copy the file(s) mentioned below in the required folder.File(s) or file type(s) to copy: Slot##.ac1 / Slot##.bmp
Folder where to copy the savegames files in: And Then There Were None\Saved Games\
Savegames made on a version localized as: English
Difficulty level: Default
Patch required: None
Additional memo: You have to keep the numerical order for your savegame files. For example, if you copy the files slot15.ac1 and slot15.bmp in your game directory and if your last savegame are named slot10.ac1 and slot10.bmp, you will have to rename slot15.ac1 and slot15.bmp to slot11.ac1 and slot11.bmp or else it won’t appear in the load game menu.
Third-party software: None