Comic Title: Brave & the Bold #122
Publisher: DC (National Periodical Publications, Inc.)
Address: 75 Rockefeller Plaza, New York, NY
Cover Date: October 1975
On Sale Date: July 22, 1975 Newsstand Date July 22, 1975
Source: Comic Reader, #120

Copyright Date July 22, 1975
Source: Library of Congress, Periodicals 1975

Frequency: Monthly (with the exception of Nov., Feb., May and Aug.)
Cover Price: $0.25
Page Count: 32
Editor: Murray Boltinoff

Title: "The Hour of the Beast"
Pages: 18

Feature(s):
Batman (of Earth-1)
Swamp Thing (of Earth-1)

Writer: Bob Haney
Artist: Jim Aparo

Reprinted In:
Showcase Presents the Brave and the Bold Vol. 3 TPB (2009)
Legends of the Dark Knight:Jim Aparo Vol. 1 HC (2012)
Batman in the Brave and the Bold:The Bronze Age Omnibus Vol. 2 HC (2018)
Swamp Thing:The Bronze Age Vol. 2 TPB (2020)

Feature Character(s)

• Batman (last appearance in Batman #268; next appearance in Detective Comics #452)
• Swamp Thing (last appearance in Swamp Thing #20; next appearance in Swamp Thing #21)

Supporting Character(s)

• Commissioner Gordon (last appearance in Detective Comics #451; next appearance in Detective Comics #452)

Villain(s)

• An unnamed government agent (no further appearances)
• Storm Unit Alpha (no further appearances)

Other Character(s)

• B.B. Riggs (a side-show promoter; no further appearances)
• Residents of Gotham City (no further appearances)
• An unnamed scientist (no further appearances)

Cameo Appearance(s)

• Linda Holland (in flashback to Swamp Thing's origin)

Comments:
Part 1: "Monster, Monster, Burning Bright"
Part 2: "Green Grows Death"
Part 3: "Look Homeward, Hero"

Synopsis:
Swamp Thing has been captured by a side-show promoter and put on display in Gotham City. Batman fails to convince the promoter to release him. Meanwhile, a government agency learns about Swamp Thing's capture and seeks to take him themselves. Before they can strike, a shipment of bio-spores is accidentally released causing rapid-growth vines to take over the city.

Batman rescues Swamp Thing from the government agents. Together they battle the deadly vines. A scientist tells Batman to target the king root. The government unleashes its own solution, a defoliant. The toxin doesn't affect the vine, but does hurt Swamp Thing. Before he succumbs, Swamp Thing uproots the king root to end the menace.

Batman takes Swamp Thing's ravaged body back to the swamp where he is rejuvenated and can leave peacefully.