Instead of Damning the Darkness, It's Better to Light a Little Lantern

"Instead of Damning the Darkness, It's Better to Light a Little Lantern" is the fifteenth episode of Season 4 of ABC Family's Switched at Birth. It is the eighty-eighth episode of the series overall. It was written by Lizzy Weiss and Linda Gase, and it was directed by Michael Lange. It was originally aired on September 21st, 2015.

Plot
Daphne, Bay and Travis celebrate spring break with a volunteer trip to rural Mexico with Melody to distribute hearing aids to underprivileged locals. However, lines are crossed when Daphne makes an unexpected connection with a fellow volunteer and Bay’s passionate anger toward Emmett gets the better of her.— ABC Family's Official Summary

Recap
To be added.

Main

 * Vanessa Marano as Bay Kennish
 * Katie Leclerc as Daphne Vasquez
 * Sean Berdy as Emmett Bledsoe
 * Lucas Grabeel as Toby Kennish (credit only)
 * Constance Marie as Regina Vasquez (credit only)
 * Lea Thompson as Kathryn Kennish (credit only)
 * D.W. Moffett as John Kennish (credit only)

Recurring

 * Marlee Matlin as Melody Bledsoe
 * Ryan Lane as Travis Barnes

Guest

 * Sean McGowan as Gabe
 * Dan J. Johnson as Quinn
 * Karen Bethzabe as Eufemia Garcia
 * Christine Avila as Elder Woman
 * Jaime Alvarez as Lemon Farmer
 * David A. Garcia as Mexican Cantina Local
 * Monica Valdivia as Pati, deaf girl
 * Karen Bethzabe as Pati's mother
 * Marco Anthony Gutierrez as Ramón, deaf Mexcian guy
 * Sal Lopez as Alfredo, former bus driver

Trivia

 * This is second longest title, which is total 12 words.
 * This features a special foundation whose helps people with all of ages and levels of hearing loss, which is based on actual The Starkey Hearing Foundation where Marlee Matlin works for.
 * This episode features Mexican Sign Language as known of lengua de señas mexicana (LSM).
 * Also, it is revealed that there are only fewer Deaf schools any left in Mexico. This is true. Noted, those poor countries do not have many Deaf schools or programs, and some certain countries simply have none.