Complex sentence: The "Bartimaeus Sequence" is a series of children's novels of alternate history, fantasy and magic reminiscent of the Harry Potter series but much darker in tone by Jonathan Stroud consisting of a trilogy published from 2003 to 2005 and a prequel novel published in 2010.
Split into simpler sentences: The "Bartimaeus Sequence" is a series of children's novels of alternate history, fantasy and magic reminiscent of the Harry Potter series but much darker in tone. It was written by by Jonathan Stroud and consists of a trilogy published from 2003 to 2005 and a prequel novel published in 2010.