Sense Sonnet - Pumper

 Case Solved!

Sherlock Holmes was called upon to

Find out who the murderer be.

Sherlock inspected every clue

Of the a salt and battery.

"Bipolar type," Sherlock deduced,

"Who's quite prone to unstable mood."

"Very dangerous if unloosed"

"While in a state of being crude."

To Holmes the solution did come

As he did his detective task.

And Scotland Yard charged lithium.

Very impressed, Watson did ask,

"Sherlock, lithium? How'd you guess?"

"Element three, dear Watson, yes!"