6. Riddles

Tuvok and Neelix have returned from a diplomatic mission. Tuvok scans the Delta Flyer, discovering a cloaking frequency, and suffers neurological damage after an attack by an invisible alien called a "Ba'Neth". He experiences cognitive impairment, memory loss, personality changes, and loss of emotional control. With help from the race they had just met with, Voyager receives a deputy investigator with theories on the terminally cloaked alien race, allowing Voyager to expose them.

Neelix resolves to help Tuvok recover. In the process, they develop a deep friendship, one that Neelix has desired but Tuvok has till late denied. As Tuvok's recovery ensues, he slowly comes to recall details of the encounter, and to discover new abilities in himself such as preparing desserts and enjoying jazz.

The information locked in Tuvok's damaged mind is essential to locating the cloaked alien race. Neelix must also work with the conflicts between Tuvok's needs, Neelix's own desires in his new friendship, and the need of Voyager's crew for their formerly expert tactical officer Tuvok.

Following Captain Janeway 's encouragement, Tuvok eventually draws the cloaking frequency in icing on a cake he prepared, and the crew is able to produce this frequency through the deflector. They expose a cloaked space station, and eventually negotiate for details on the weapon used on Tuvok. Tuvok slowly makes a full recovery, but still appears to retain a bit of the illogical self he briefly knew.