This is the final installment of the "who cares?" time-travel series.
It suffers all the same problems as the first 2 installments: No information to explain why the characters should be excited to see anyone here.
It does, finally, take place in Waterdeep, WHEN Waterdeep is finally Waterdeep. The entire module meanders around and the only thing that matters (which is easy to skip because it isn't highlighted or labeled as important) is a vision from the final fight. The players meandered through 3 poorly explained Time Travel modules to get a Vision that could have been a Dream Sequence. This would have been more fun if the modules had provided any interesting backstory on Waterdeep instead of depending on the DM to do independent research in a desperate attempt to find reasons for the characters to care about anything.
Spoiler Alert: The Vision that appears in the final battle is just the founders of Waterdeep locking away an unknown object and hinting that future heroes may need it.
[1 of 5 Stars!]