Complex sentence: Rawle found the storyline something which he would like to "have a crack at", and revealed that the role of Silas is "very interesting" for him, as he had not played a murderer in his career before.
Split into simpler sentences: Rawle found the storyline something which he would like to "have a crack at". The actor said that the role of Silas is "very interesting" for him as he had not played a murderer in his career before.