Tonight is the second semi-final of The Family Brain Games 2019, hosted by Dara O Briain.

Two more of last week’s winning families return to the specially designed games lab as they once again go head to head in the ultimate test of intelligence in a bid to make it through to the final.

The stakes are high and the games are even more difficult than in the heats, as the two families compete, all under the watchful eyes of leading neuroscientist Dr Hannah Critchlow.

Tonight’s games include Shape Shifters, a visual game that tests group communication and non-verbal reasoning as they work together to recreate a 3D geometric shape, and Word Ladder, a vocabulary game which requires the family members to work strategically as a team, demonstrating fluid and efficient group communication skills.

There is also Pathfinder, a game for the adult team members, which tests their co-operative spatial planning and logic, whilst the two children compete at Card Slide, a numerical game that also relies on strategy.

The semi-final concludes with the intense all-or-nothing Interrogation round. They say the family that plays together, stays together but can these families stay united long enough to make it to the final? Show less