Kalina556,
I agree with John's suggestions of the Network Diagram tool, though my own experience with it has been frustrating.
You may also be seeking a logic tracing filter, which assists in visualizing the impact of dependencies within the schedule - primarily by hiding unrelated tasks. Some examples are shown here in my blog.
The tool that I use is not generally for sale, though I'm always on the lookout for other users to test.
Good luck, tom