This looks like the handiwork of an arsonist.

这看上去像是纵火犯干的。

《牛津词典》

The real Rebecca Rubin is an arsonist wanted by the FBI.

现实中的丽贝卡·鲁宾则是一名被FBI(美国联邦调查局)通缉的纵火犯。

youdao

Everyone is gonna think I'm an arsonist.

每个人都会认为我是个纵火犯。

youdao

An arsonist tried to burn down a building after being allowed out of prison on a work placement.

BBC: Prisoner Edward Macdonald 'tried to burn down building'

"We do not expect an arsonist to be a firefighter, " he said.

BBC: Hague: Giving arms to Syrian rebels cannot be ruled out

My neighbors, were they ever to introduce themselves, and upon hearing that I was an arsonist and a murderer, would start talking about the virtues of Bermuda grass as opposed to Kentucky blue.

NPR: Chapter 1