There was a flood, and involved in this flood were two creatures

뒤에 문장이 원래는

two creatures were involved in this flood 였다는데 도치된 구문이 저렇게 동사 중간을 딱 잘라먹고

involved in~ 부터 시작해도 되는건가요?

in this flood were involved two creatures 로 안쓰인 이유가 뭐져?

숙어 involve in 을 살려주려고 한건가요?

답변 부탁드립니다 ㅠ