Complex sentence: The last words of the accused raised doubt as to the true nature of the innkeepers; however, many historians think that the culpability of the Martins in the "assassination" of Enjolras is far from being proven.
Split into simpler sentences: The last words of the accused raised doubt as to the true nature of the innkeepers. However, many historians think that the culpability of the Martins in the "assassination" of Enjolras is far from being proven.