Skip to content

123MVIESWatch Your Favorite Movies Online

Movies TV-Series Top Rated

Search movies or series

Browse

Movies
TV-Series
Top Rated
Genres

Genres

Action
Adventure
Animation
Comedy
Crime
Documentary

About

About
FAQ
Privacy
Terms

123MVIESWatch Your Favorite Movies Online

Browse and discover movies and TV series — ratings, cast, trailers, and where to watch them legally on the services you already have.

This product uses the TMDB API but is not endorsed or certified by TMDB. Streaming availability data provided by JustWatch via TMDB.

© 2026 123 Movies. A discovery guide — we do not host or stream any video content.

TV-Series/Blue Building Detectives/Season 21

Blue Building Detectives — Season 21

14 episodesFirst aired 15 December 2025

E1
Episode 1
Dec 202525m
E2
Episode 2
Dec 202515m
E3
Episode 3
Dec 202522m
E4
Episode 4
Dec 202522m
E5
Episode 5
Dec 202523m
E6
Episode 6
Dec 202520m
E7
Episode 7
Dec 202520m
E8
Episode 8
Dec 202523m
E9
Episode 9
Dec 202522m
E10
Episode 10
Jan 202621m
E11
Episode 11
Jan 202622m
E12
Episode 12
Jan 202621m
E13
Episode 13
Jan 202622m
E14
Episode 14
Feb 202624m

All Seasons

Season 126 episodes · 2012
Season 213 episodes · 2012
Season 326 episodes · 2013
Season 427 episodes · 2013

Season 526 episodes · 2014

›

Season 626 episodes · 2014›

Season 726 episodes · 2016›

Season 826 episodes · 2016›

Season 926 episodes · 2017›

Season 1026 episodes · 2018›

Season 1126 episodes · 2018›

Season 1226 episodes · 2019›

Season 1326 episodes · 2020›

Season 1426 episodes · 2020›

Season 1526 episodes · 2021›

Season 1626 episodes · 2022›

Season 1713 episodes · 2023›

Season 1813 episodes · 2023›

Season 1920 episodes · 2024›

Season 2013 episodes · 2025›

Season 2114 episodes · 2025›

Season 2214 episodes · 2026›

Blue Building Detectives — Season 21 | 123 Movies