Complex sentence: The psychical researcher Harry Price joined the SPR in 1920 and was considered a leading expert at debunking fraudulent mediums but in direct contrast to skeptics such as Harry Houdini, Price endorsed some mediums that he believed were genuine.
Split into simpler sentences: The psychical researcher Harry Price joined the SPR in 1920 and was considered a leading expert at debunking fraudulent mediums. However, in direct contrast to skeptics such as Harry Houdini, Price endorsed some mediums that he believed were genuine.