Meanwhile back at Baker Street, Basil and Dawson had entered the flat only to be shocked at the sight of poor Mrs. Judson, bound and gagged. She struggled and tried to say something only her response sounded muffled by the gag tied around her mouth.

"Oh, my goodness!" Dawson gasped as he and Basil quickly worked to untie her.

"Mrs. Judson, are you alright? What happened?" Basil asked with genuine concern for his landlady. He then noticed someone else was missing, and demanded a bit more sharply than intended, "Where is Miss Relda?"

"Oh, my heavens!" Mrs. Judson cried, quite shaken from the break in. "It was that despicable Doran! Miss Relda was just playing music on the phonograph while I made her a cheese soufflé, and I must say her voice is quite heavenly. But that villain came in here, and I'm afraid to say, I fainted. When I came to, Miss Relda was gone. That monster has abducted her!"

"RELDA IS GONE?!" Basil bellowed, anger and guilt overwhelmed his emotions, for the first time in his life. "Uggh! I should never have sent her back here on her own! I should've gone with her...no, I should've brought her with me to Scotland Yard! Now Ratigan has gained the upper hand again!"

"Basil, calm yourself at once!" Dawson had shouted suddenly, making Basil gaze at him, surprised by Dawson's sudden bold bluster. But since he got the detective's attention, it was Dawson's turn to reassure Basil by placing a gentle hand on his shoulder. "It isn't your fault Miss Relda was kidnapped. We'll get her back. Don't forget she's a strong and reliable woman, and I'm certain she'll take care of herself and Olivia."

Listening to the older mouse's words, Basil sighed calmly to ease his anger and managed to smile a little bit for his friend. "You're right, Dawson. We'll get them both back, I swear it on my honor!"

He turned to the still shaken Mrs. Judson and gently took her by her shoulders. "I'm so sorry, Mrs. Judson. I never meant for this to happen to you. Why don't you go lie down, you've had a nasty shock. Meanwhile, Dawson and I have some work to do."

As soon as Mrs. Judson retired to her room, Basil turned on a lamp that stood beside his red armchair. He took out his magnifying glass from his pocket to inspect the list Dawson had found at the toy store earlier.

"Offhand I can deduce very little," Basil said, examining the letters and splashes of ink on the sheet of paper. "Only that the words are written with a broad pointed quill pen which has splattered twice."

He made the paper softly flutter in his right hand gently to feel the texture and weight. "That the paper is of...native Mongolian manufacture...with no watermark. And has..." Basil began numbing in the paper with his mouth, "been gummed, if I'm not in much error..." he sniffed the paper to get its scent, "by a bat, who has been drinking rodent's delight.

Dawson used his glasses to briefly study the paper that Basil held up, smiling casually as he explained, "A cheap bandy sold only in the seediest pubs."

"Amazing." Dawson was astonished.

"Oh not really, Doctor, we still don't know where it came from," Basil replied, his hand reaching past the glass cups and tubes to pull out a microscope. "Perhaps a closer inspection will tell us something."

Sliding the paper underneath the magnifying scope, Basil brought the lens into focus on the black spattered spots on the paper. "Coal dust. Clearly of the type used in sewer lamps," Basil said, determined by that logic before he walked away.

Dawson stood high enough to reach the device's height so he can peak through the lens and study Basil's find. However it only took him a second as Basil snatched the paper away, surprising Dawson at what the detective was going to do next.

With his tongue out licking his lip slightly, Basil carefully held the paper over a Bunsen burner. He turned it suddenly, causing the burner to create a large fire and burn a hold in the paper.

"But, but Basil, I-" Dawson objected.

"Shhh! Don't speak!" Basil ushered, as he watched the burning remains of the paper gently fall into a small wooden bowl as it turned to ash.

He grabbed a wooden grinder and started turning the charred ashes further into a dusty substance in seconds as he stirred them in the bowl. Finished, he held the bowl over a glass beaker with a yellow liquid inside, pouring the contents of the bowl into the liquid, making it turn its color blue.

Dawson stared at the blue liquid but Basil immediately returned as he picked up the beaker saying, "Excuse me, Dawson." Carefully, he held the beaker in his right hand and in his left hand was a bottle containing a red liquid ready to pour.

"Steady hand," Basil spoke quietly, still grinning. Tipping it gently, a drop fell into the liquid, creating a reaction of a puff and a hiss as the liquid fizzed.

Dawson continued watching his friend's unexplained experiment, curious to why this was all heading.

Then Basil readied the final step of his experiment. He placed the beaker underneath an apparatus with Bunsen burner at the end with a boiling green liquid in a bottle glass-like flask and attached to it was a twirling ring of tubs that led all the way to the beaker. Turning the Bunsen on, Basil watched the green chemicals bubble furiously and reacted while it started to flow through the odd twirling glass pipes.

"Yes, yes, good. C'mon, c'mon, c'mon," Basil encouraged calmly. "Yes, yes. Good, good. No, not bad. Good, good. Oh! C'mon, c'mon."

The green chemicals made its journey through the glass tubes, whizzing and curling around inside the ring of pipes, until finally reaching its destination where it all gathered into a single green drop at the end over the beaker.

Basil's eyes anticipated excitedly. "Yes, yes!"

The final drop fell and entered the beaker's contents in seconds, creating another puff of smoke and the colored liquid to change red in seconds, and lots of fizzing and bubbles followed after.

"Ha, ha! We've done it, old fellow!" Basil cheered, placing an arm around the clueless Dawson, proud of his achievement. "This reaction could only have been triggered by the paper's extreme saturation with distillation of sodium chloride!" With those words, he raced toward the corner of the room.

Extremely puzzled, Dawson approached the beaker and put on his glasses to examine the liquid, which had changed its colors again, this time a pale white blue. "Salt water? Great scot!" he exclaimed.

"It proves beyond the doubt..." Basil said, tossing various scrolls of maps away to look for a specific one that indicated what they were looking for, "that the list came from the river front area!" At last, Basil found the map he was after and pulled it out and began to pin it up to the wall.

"Oh, now, steady on there, Basil," Dawson tried to ease his friend as he walked over to the map.

"No, no. Elementary my dear Dawson," Basil replied confidently, and then proceeded to search the map for the location of paper's whereabouts. "We merely look for a seedy pub at the only spot..." he pinned the dart down on the spot he was looking for, "where the sewer connects to the water front."