Su Wen and the three of them slipped to the preparation room on the east side, and there was only one maid standing at the door waiting in the preparation room at this time. Because it was already dance time, the maids and cooks, who had been busy all night, could finally take a break.

Most of the maids chose to stand around the ballroom and watch the handsome young men and women in fine costumes dancing on the dance floor. For them, it is a kind of sustenance for the beautiful fantasy of being in high society.

And Warrent's behavior today also shows that it is possible for poor families to enter aristocratic families.

"Big ...... Miss Balotte: Hello. When the maid saw Su Wen and the others, she hurriedly saluted, but because of her inertia all along, she almost called her "eldest lady". After all, Warrent only announced the return of the real eldest lady Marlena a few hours ago, and it is difficult to suddenly change her words.

"Good work. Balotte smiled slightly, and then asked Su Wen in a low voice, "Do you need to let her avoid it?"

Su Wen shook his head lightly and said, "There are still some details that need to be asked of her." “

Barot smacked for a moment, then noticed the maid's curious and awe-inspiring eyes, and then said, "These two guests are curious about your work, so take them for a visit." ”

Orange Medal!

The maid nodded slightly, generally speaking, the guests of the Orange Medal have high-ranking maids to serve them, and ordinary maids like her generally do not have the opportunity to contact the distinguished guests of the Orange Medal.

For them, it was a valuable experience to be able to meet these high-class people, not to mention the small gifts that these big people gave because of the customs of the snow castle.

"So, there may be something you need to explain in a moment. ”

The maid was flattered, and hurriedly greeted Su Wen and Ellie.

The prep room is quite large, with two wine cabinets and several rattan baskets filled with fruit, in addition to a few makeshift tables for food. There are also two makeshift counters with food utensils and an ice bucket on them.

Because there is nothing to prepare now, there is no longer much food on these tables, only some empty cups still on the plates.

Su Wen looked at Ellie and told her with her eyes to let her sense the remaining toxin decomposition in this room.

Ellie understood and immediately began to search for traces of its toxin decomposition.

Taking advantage of Ellie's search, Su Wen came to the preparation table with great interest and asked the maid about the placement and use of various equipment.

The maid is probably a little nervous, from the speed and tone of her speech, it can be seen that she is a little restrained, but the level of business is not to say, what are these things and how to use, you can say it when you open your mouth.

After listening, Su Wen realized that there were so many small rules in a small preparation room. For example, the way the utensils are placed, the order of use, the process of opening and pouring wine, etc., all have strict and uniform regulations, and the maids who can serve here are all elites who have passed rigorous training and examinations.

Through the maid's introduction, Su Wen mastered two useful clues.

One is that the cutlery of the Snow Castle members is different from that of other guests, the guests have gold glass, while the Snow Castle family members have silver glass.

The second is the drink that was served to Marina's group of young people just now, which is a mixed alcoholic drink, and the base wine is a special fruit wine of Xuedun City that needs to be left to stand for a period of time. The recipe is to pre-cool the glass with ice cubes, then pour the wine into the glass, wait for a while, and then add a little more wine to enhance the flavor.

Among Marina's group, only Marina is qualified to use the silver-patterned wine glass, so poisoning Marina is a breeze in terms of target identification. In this static waiting time, the murderer was also given a chance.

Ellie seemed to want to say something, and when Barrot saw this, she made an excuse for the maid to show off her bartending skills. Because Barlow's special drink requires an unpopular wine, the maid hurriedly ran to the back kitchen to fetch the wine after apologizing. In this way, it can be regarded as a branch of the maid.

"On the ceiling, on the floor, there are traces of residue. Ellie pointed to two places, then pulled out another ice cube.

"Ice?"

"On this piece of ice, there are still toxins left, because of the low temperature, the toxins decompose very slowly. ”

Su Wen looked at the ice cube that had turned into a disfigured shape, thoughtfully.

Seeing this, Barot also lifted his magic, released a vision spell, and then swept around the preparation room.

"This piece of ice fell from the ceiling over there. ”

That ceiling is what Ellie is referring to, the ceiling with the residue of toxins and decompositions. It is located just above the preparation table.

Ellie and Barot looked at each other.

In other words, the murderer fixed the ice wrapped in toxin to the ceiling, and then at the right time, through some means, let the toxin fall into Marina's cup. "But the location and timing of the drop ......"

"Since the murderer has this kind of thought, then this kind of problem is not a difficult thing for him, and you must be able to do this level of judgment. ”

Barot thought for a moment, then nodded: "Yes, as long as you can determine the landing point with a little calculation, or directly use magic to interfere, this small piece of ice is not a problem at all." ”

"But isn't this just an ordinary piece of ice...... How do you find the killer?" asked Ellie.

Su Wen shook his head, and casually summoned a small whirlwind, blowing up a piece of ice in the ice bucket next to him and rolling it into his hand. Su Wen's technique opened Barlot's eyes, there were no superfluous movements and chanting, and Su Wen's control of magic power was almost to the point of being handy.

"Look closely, is there a difference between the two pieces of ice?"

Ellie shook her head, and after Ballot looked at it for a while, she used the vision technique again, and carefully observed the two pieces of ice before she said, "This piece of ice...... One piece is made of magic, and the other is made of natural condensation, right? You can tell if you look closely......"

"That's right. Su Wen replied: "Moreover, people with different spell casting habits have different structures to make ice. ”

Su Wen said, and condensed an ice pick out of his hand.

"The lines are different...... "Ballott looked at the icicle again, and analyzed. Looking at the icicle made by Su Wen, Balotte was surprised again, because the physical structure of this icicle was so neat, much more stable than the previous piece of broken ice.

Ellie looked confused, after all, she didn't know anything about magic.