3rd

PFS StandardRing of Truth  [two-actions] Spell 3

Uncommon Concentrate Detection Manipulate Mental 
Source Player Core pg. 354
Range 30 feet; Area 20-foot burst
Defense Will; Duration 10 minutes
You designate an area in which lies are revealed. Creatures in the area also take a –2 status penalty to Deception checks. Each time a creature in the area speaks a true statement, the soft ring of a bell sounds in the area. Creatures are aware of the magic; therefore, they can avoid answering questions to which they would normally respond with a lie, or they can be evasive as long as they remain within the boundaries of the truth. If a creature is in the area when the spell is cast or later enters the area, that creature attempts a Will save. It uses the results of this initial save if it leaves and reenters the area.

Critical Success The target is so convincing that the bell rings even if they lie.
Success If the target lies and succeeds at their Deception check against all targets, the bell still rings.
Failure The bell accurately sees through their deception and will never ring if they lie.

Constants

PFS StandardDetect Magic  [two-actions] Cantrip 1

Cantrip Concentrate Detection Manipulate 
Source Player Core pg. 323
Area 30-foot emanation
You send out a pulse that registers the presence of magic. You receive no information beyond the presence or absence of magic. You can choose to ignore magic you're fully aware of, such as the magic items and ongoing spells of you and your allies.

You detect illusion magic only if that magic's effect has a lower rank than the rank of your detect magic spell. However, items that have an illusion aura but aren't deceptive in appearance (such as an invisibility potion) typically are detected normally.
Heightened (3rd) You learn the rank or level of the most powerful magical effect the spell detects, as determined by the GM.
Heightened (4th) As 3rd rank, but you also pinpoint the source of the highest-rank magic. Like for an imprecise sense, you don't learn the exact location, but can narrow down the source to within a 5-foot cube (or the nearest if larger than that).