Wearing boots, I love to run

It's a never ending fun.

With back pack, catching liars,

Got lighter and magnifiers.

Standing there seeing through my eyes

Beware! I can detect all your lies.

World of mine is all about clue,

I struggle hard for not seeing you blue.

Buckled up, I've got the gun,

Before pulling trigger, counting three to one.

You'll find me reviewing files,

Indeed I can tail you for miles!

Time to give you hint, I always sprint,

My eyes sparkles seeing fingerprints.

I am a patient, a cobbler or doctor next day.

These little games I need to play.

I wear a hat on my head,

Saying 'Police Cap' won't be so bad.

It all starts with the letter 'D'

That's something I really wanna be.