can you summarise the book secret o river wirten by kate grenville by one setnece

"Secret River" by Kate Grenville tells the story of a British ex-convict, William Thornhill, who settles in colonial Australia and becomes entangled in a brutal conflict with the Indigenous people over crucial land rights.

"The Secret River by Kate Grenville is a powerful novel that explores the complexities of early Australian colonization and the conflicts between settlers and Indigenous people."