As Tiger gets to know her doppelganger Ty-Anne, Wolf acclimates to the NAG, and Josh wanders the desert. Josh is brought to the NAG and remanded to indentured servitude as…

Koothrappali is worried people won’t take him seriously in his own field after publishing a paper that suggests he may have discovered alien life. Also, Leonard wants to be the…

When Howard dresses up as Sheldon for Halloween, Sheldon seeks retaliation at Leonard and Penny’s Halloween party. Leonard is shocked that Penny doesn’t remember their first kiss.

Jake’s crushing debt finally catches up to him, and he is in danger of losing his apartment, unless Gina can find a way to bail him out. Captain Holt and…