【答案】The police grilled him about his movements at the line of the crime.

grill [美国英语] 对…严加审问、拷问、盘问，对…彻底追问。经常用about 引出“审问、盘问、拷问、追问”的内容。

例如：

His boss grilled him about the missing money. 

他的老板严厉询问他关于遗失的钱的事。

At the police station, she was grilled for twenty-four hours. 

她在警察局被拷问了二十四小时。

The police grilled him (with non-stop questions) for over an hour. 

警方(以连串的问题)盘问了他一个多小时。

He was grilled for three hours by the police. 

他被警察盘问了三个小时。

The police grilled the prisoner until he confessed. 

警察对犯人严厉盘问，直到他认罪为止。