Be honest.
When you were a kid, didn't you want to be in the centre of an investigation that only you could solve, like Nancy Drew or the Famous Five.
As a kid you might not have had the opportunity to get involved in any investigation but as a grown-up you now may find yourself with a mystery or two that you want to get to the bottom of.
Who is calling you in the early hours only to hang up quickly? Who is your spouse whispering so secretively to on the cell phone? Well, you can be that special investigator and find someone's cell phone number thanks to the existence of reverse cell phone lookup services on the internet.
While there was a time when the owner details of cell phone numbers were simply not made available, in sharp contract to landline numbers in the White Pages, recent times has seen a large number of websites offering to provide these details at a small price to you.
All you need is the suspect number and a credit card.
You can track down that irritating prank caller by typing the number into the website's search function box and in a matter of seconds the owner's name, address and even place of work will pop up before your eyes.
The information can be much more detailed, depending on which website you sign up to.
You can even find out next of kin or date of birth.
Once you have received this information you can then go about solving the mystery in full.
You can confront that pesky caller face-to-face and give him or her the shock of their lives, though you might also want to hand the information over to the relevant authorities.
And that mystery caller your spouse whispers to? Well, they will be shocked to see you too.
Remember too that your investigation started in your own home at your own computer, and took little less than one minute to conclude.
Even Nancy Drew couldn't work that fast!