A sudden illness threatens to derail Maia Pujara's neuroscience PhD, and after growing up in humble circumstances in St. Lucia, biologist Whitney Henry feels like an imposter at Harvard.

Actor Gail Thomas is invited to take part in a study testing mushrooms as treatment for depression in cancer survivors, and comedian Myq Kaplan experiments with ayahuasca.

Ecologist Cylita Guy finds unexpected adventure when she studies bats in the field, and honeybee nutritional ecologist Rachael Bonoan begins to worry she's allergic to the bees she studies.

Jean Le Bec travels abroad to find a solution to her dental problem, and science writer Michael Lemonick interviews an old friend who lost the ability to form memories.

Biochemist Katie Wu's mother won't believe she's lactose intolerant, and neuroscientist Oliver Vikbladh finds answers about his sister's disability.

Erica Silberman tries to care for her mother, who has Alzheimer's, and Pat Furlong searches for answers when her sons are diagnosed with a dangerous condition

Ornithologist Sam Snow finds his research comes at a cost, and biologist Megan Hatlen worries that she’ll never make a breakthrough in her research.

Cancer survivor Benjamin Rubenstein comes up with a creative solution to the after-effects of his treatment, and Abbas Mousa becomes a computer scientist to survive the Iraq war.

To escape his identity, Richard Cardillo joins a Catholic mission in Peru, where he becomes a community health organizer, and marine biologist Liz Neeley feels invisible to her coral conservation colleagues. 

Science journalist Eli Chen tries to combat her complicated romantic feelings with neuroscience, and Shannon Palus gets more than she expected when she takes an internship at a nuclear energy lab.