An assistant

"It's really quite simple- I have plans for the rest of your friends here," you say sharply, "To make my job easier, you're going to help me catch them."

"Why would I do that?"

"If you do it, your tapes will be erased and your bondage will be minimal. I reward girls who behave around here."

"What are you going to do to them," Donna asks sheepishly.

"I'm going to grab them, strip them and tie them up. After that, the sky is the limit!"

"Why are you doing this?!?"

"Because I can," you reply, "Now do you want me to get you naked, tie you up into a ball and spank you?"

"No! Please don't!"

"Good girl. So you will help me catch your friends and tie them up?"

"...yes," Donna says submissively.

"Good girl. Now, I do have to tie you up a little. Call it an 'insurance policy' on my part," you say, "However, since you're my assistant now, I'll only use the tape. Plus, I'll let you put on some underwear. Alright?"

"Okay..."

"That's not the right reply. You say 'yes, master.' Got it?!?"

"Yes, master," Donna replies quickly. Her tone is one filled with fear.

You take the young woman's towel away and let her go pick out some underwear from her drawer. She would object to you seeing her naked, but you've clearly already done so on many occasions.

She returns in a black, sexy bra and matching panties. She holds her hands out in front of her, presenting them to you.

You pull out the electrical tape and wrap her wrists together tight. She can't get loose now.

Now, the big question- who do you use Donna to catch first?