Three siblings work together to stop the evil time-traveling captain from gaining a powerful item that would turn him immortal while at the same time trying to save their friend, but time is running out, ironically. 
Derek Smith
'Oh, I could never get used to those kinds of twisty time things in my head. I like clear straight lines.'
'Tell me about it,' said Chuck. 'Time travel is a real mindbender, am I right?'

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  1. The Obsidian Compass by Liesl Shurtliff (Katherine Tegen Books, October 2019).
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Liesl Shurtliff