en·gross 
/ɪnˈgroʊs/ verb
en·gross·es; en·grossed; en·gross·ing /ɪnˈgroʊs/ verb [+ obj] : to hold the complete interest or attention of (someone) — usually used as (be/get) engrossed ▪ She gets completely engrossed in her work. ▪ They were engrossed in conversation.
— engrossing adjective [more engrossing; most engrossing]
▪ The book explains the sequence of events in engrossing detail. ▪ an engrossing story/account/study
▪ The book explains the sequence of events in engrossing detail. ▪ an engrossing story/account/study
