What is the order of The Secret Circle books?

The Secret Circle series by L.J. Smith is a bit tricky because there are two separate series with the same name but different storylines.

Here's the order for each series:

Original Series (1992-1994):

1. The Secret Circle

2. The Lost Years

3. The Shadowland

4. The Circle's End

Reimagined Series (2009-2013):

1. The Secret Circle

2. The Dark Secret

3. The Blood of the Coven

4. The Wild Hunt

5. The Witch

6. The Circle's End

Note: The reimagined series was written to tie into the television show of the same name, which aired in 2011-2012.

Which series are you interested in? This will help me give you more specific information.