It's quite captivating.

Meaning

It holds your attention completely.

Examples

• John: I just finished that new mystery novel.
• Alice: Oh, I've heard good things. Is it good?
• John: Yes! <b>It's quite captivating</b>. I couldn't put it down!
• Alice: I'll have to add it to my list. <b>It's quite captivating</b>, you say?