Complex sentence: He first appears in "The Perfect Pieces in the Purple Pond", in which he mistakes Dr. Brennan's question about whether he has a preference for dating older women as a come-on.
Split into simpler sentences: He first appears in "The Perfect Pieces in the Purple Pond". During the first episode he appears, he mistakes Dr. Brennan's question about whether he has a preference for dating older women as a come-on.