This is in the same vein as "Searching", a first person mystery/thriller, where almost every scene is of a person sitting at a computer or looking at a phone. If this alarms you, don't let it. It is very well put together, enough notes are put on the "screen" so even the very computer illiterate should be able to follow.

The story is a young girl, who loses her beloved father, and is raised by her now single mother without any other family. The mother disappears while on vacation and the daughter uses her computer skills to find clues. There are many twists and turns which will keep your interest. Not sure if all of the computer navigation is terribly realistic, but it's easy to suspend your disbelief, and I advise you to.