Just wanted to make you aware that Karaites and Samaritans are dangerous sects that you should stay away from!
Karaites claim that they follow only Written Torah. However, this is a blatant lie! In reality they also believe in NK and they have their own oral torah (or traditions as they call it) that they follow. The most unbleievable part is that they HIDE their traditions and oral torah from most of their followers. Their followers are not aware that they are following interpretations of the Torah by Karaite sages, and not pure Written Torah as God has intended and commanded. Please also see this post.
Samaritans are the same. They have their traditions and they have a different Book of Joshua that they believe into. They also do not follow pure Written Torah. They are in a genetic crisis at the moment, so they are trying to lure people (particularly women) into their sect. Stay away from them if you know what is good for you!
This is not to mention, that Karaites and Samaritans observe traditional 7th day Shabbat, which means that they not even aware of the proper calendar and Shabbat of the Torah.
I hope this clarifies this issue. Please, please, stay away from either of these sects. They are very dangerous and damaging!