The Third Rail

 is a location in Goodneighbor. It is notable as the place to meet Robert Joseph MacCready, you can also meet Magnolia here and date her after a series of persuasion checks. The bar is said to be owned by John Hancock.

Layout
The Third Rail is a subway station, initially there's a small area with a bathroom to the right and the bouncer Ham. Down the stairs there's the bar, off to the right there's a "back room" where you can find MacCready. The bar is tended by a Mister Handy with a british accent named Whitechapel Charlie

Inhabitants

 * Robert MacCready in the backroom.
 * Ham the doorman.
 * Barnes and Winlock pay a visit to Robert MacCready the first time one visits the establishment.
 * Magnolia the singer.

Notable loot

 * Live & Love – On a toilet in the right stall. When you enter the area, turn right to reach it.
 * 1 Nuka-Cola Quantum, 2 Nuka Cherry and the Gwinnett Pilsner recipe holotape on the bar behind Whitechapel Charlie.

Quests

 * Clean out the Goodneighbor Warehouses - One needs to buy an alcoholic beverage from Whitechapel Charlie to iniate the quest.
 * The Silver Shroud - One needs to ask Whitechapel Charlie to know where Kendra is hiding.

Appearances
The Third Rail appears only in Fallout 4.

Behind the Scenes
There is in fact a subway station (a.k.a. a "T" stop) below the Old State House in Boston. As the blue tile on the walls indicate it's a stop on the Blue line (but instead of being named Scollay Square it's actually called simply "State").

Третий рельс