Paul Thomas tackles birds and bugs at the hospital and other public buildings
The cameras are back at the University Hospital of Wales in Cardiff to catch up with some of the stories captured in one week of filming last year.
A baby who was born three months premature returns to meet hospital chaplain, the Reverend Trevor Williams, in happier circumstances.
This time it's smiles all round as the chaplain prepares to officiate at Dylan's christening.
Hospital 24/7 Revisited is on BBC One Wales on Tuesday at 2235 BST.
Olivine Henry was a patient going under the knife last year to remove a tumour which had caused excessive growth hormones.
Back home in Nantyglo, Olivine reflects on the difference the surgery has made.
Emergency nurse practitioner James Brewster-Liddle was last seen contemplating the violence of some of the injuries he had to treat among the 120,000 emergency patients who visited the Heath last year.
James now has extra responsibilities, including teaching the next generation of nurse practitioners.
And the hospital's resident exterminator Paul Thomas, who tackled flies, wasps and bugs last year, turns his ex-Royal Navy Gunner sights on the skies to face a serious hazard - the number of seagulls on the site.
Hospital 24/7 Revisited returns to BBC One Wales on Tuesday 17 August at 2235 BST